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troubleshooting
Practise Palo Alto Networks Certified Network Security Administrator PCNSA troubleshooting practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.
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What to know about troubleshooting
troubleshooting questions test whether you can apply the concept in context, not just recognise a definition.
How the topic appears in realistic exam-style scenarios.
Which detail in the question changes the correct answer.
How to eliminate plausible but wrong options.
How to connect the question back to the wider exam objective.
Watch out for
Common troubleshooting exam traps
- ▸Answering from memory before reading the full scenario.
- ▸Missing a constraint such as cost, availability, security, scope or command context.
- ▸Choosing a broad answer when the question asks for the most specific fix.
- ▸Ignoring why the wrong options are tempting.
Question index
All troubleshooting questions (516)
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A firewall is configured to decrypt SSH traffic. Which type of decryption must be enabled?
Easy2Match each firewall deployment mode to its description.
Medium3Refer to the exhibit. An admin adds a new address object 'db-03' with IP 10.0.0.3 and tags it with 'database'. However, 'db-03' does not appear in the group. What could be the reason?
Hard4A company uses dynamic address groups based on tags. A virtual machine receives the tag "WebServer". After the VM is decommissioned, the tag is removed. What happens to the dynamic address group?
Hard5An administrator wants to use Policy Optimizer to consolidate rules. Which of the following is a prerequisite for using Policy Optimizer on a rule?
Hard6A company has two Palo Alto Networks firewalls in active/passive HA. The passive firewall failed and was replaced with a new unit. The network administrator initiates a configuration sync from the active to the new passive. After the sync, the passive unit shows as 'Active' instead of 'Passive'. What is the most likely cause?
Medium7A company is deploying multiple Palo Alto firewalls and wants to manage them centrally. Which method should be used?
Hard8A company has a PA-5250 firewall with 10 Gbps threat prevention throughput. They are planning to enable SSL decryption for all traffic. What is the most likely impact on the firewall's throughput?
Easy9A large university uses a Palo Alto Networks firewall to secure its network. The security team has implemented a policy to block peer-to-peer (P2P) file sharing applications. They have configured a security rule that denies all applications in the 'peer-to-peer' category. However, they notice that some students are still able to download files using BitTorrent. The traffic logs show the application as 'bittorrent' but the rule does not match. Upon investigation, the rule is applied to the correct zones and includes the peer-to-peer category. The source and destination are any. What is the most likely cause of this issue?
Hard10An administrator needs to generate a report showing all applications used by a specific user group over the past week. Which method is most efficient?
Medium11A network administrator notices that some HTTPS sessions are not being decrypted by the firewall, even though the decryption policy rule is configured to decrypt traffic from a specific subnet. The firewall is in forward proxy mode. All other decryption rules work. What is the most likely cause?
Medium12Users report that some internal services are not accessible when connected via VPN, but they work when on the local network. The firewall has a policy allowing all traffic from the VPN zone to the internal zone. What should the administrator check first?
Medium13Refer to the exhibit. What is the status of the commit job?
Medium14A security administrator wants to block all traffic using the BitTorrent protocol regardless of port. Which method should they use?
Easy15A company needs to restrict access to a critical server from external IP addresses, but internal users should have full access. Which rule structure should be used?
Medium16A company is deploying a PA-220 firewall in a branch office. The firewall will be managed by Panorama. Which THREE of the following are required to establish a successful connection between the firewall and Panorama?
Hard17A company has a pair of PA-5220 firewalls configured in an active/passive high-availability (HA) cluster. The devices are managed via Panorama, which also manages other firewalls. The security team reports that after a recent commit on Panorama, the passive firewall in the HA pair stops responding to management pings. The active firewall continues to pass traffic and is manageable. Upon investigation, the passive firewall shows the following on its console: 'Management plane is down.' The administrator suspects the passive firewall might have received a configuration that disables the management interface. What should the administrator do to restore management access to the passive firewall without affecting production traffic?
Easy18Based on the exhibit, what will happen when a user in the trust zone attempts to access an HTTPS website (TCP 443)?
Hard19An organization is using outbound SSL decryption with a forward proxy. They notice that mobile devices (iOS/Android) are having trouble connecting to many HTTPS sites after decryption is enabled. IT has installed the root CA certificate on all devices. What is the most likely reason?
Hard20A firewall administrator notices that after a power outage, the firewall boots up but fails to load the last committed configuration. What should the administrator do to recover the configuration?
Medium21An administrator needs to create a service group for a custom application that uses TCP ports 1000 and 2000. Which two methods will successfully create a service group that can be used in a single security rule? (Choose two.)
Medium22An administrator wants to schedule regular configuration backups to an external server. Which THREE methods are valid ways to achieve this? (Choose three.)
Hard23Which TWO of the following are valid methods to upgrade the PAN-OS version on a Palo Alto Networks firewall?
Medium24A company implements SSL Forward Proxy decryption. Users report that some internal applications fail to load after deployment. The firewall is configured with a CA-signed certificate for decryption. What is the most likely cause of the application failures?
Medium25When configuring a security policy rule to allow HTTP traffic from the internal zone to the external zone, which mandatory components must be defined?
Easy26A security administrator notices traffic from an internal user to a known malicious IP address in the corporate network. The traffic is allowed despite a security rule that blocks traffic to that IP. The rule is in a rulebase with multiple rules, and the administrator verifies that the malicious IP is correctly listed in a custom object used by the rule. What is the most likely cause of this issue?
Hard27An organization deploys SSL Forward Proxy decryption. They want to ensure that traffic to financial websites is not decrypted due to compliance requirements. Which decryption policy configuration should be used?
Medium28An administrator modifies a security policy but the change does not take effect. What must the administrator do?
Easy29Which TWO of the following are valid methods to deploy a Palo Alto Networks firewall in a virtualized environment? (Choose two.)
Easy30After upgrading the PAN-OS version on a firewall, the administrator notices that the commit operation takes significantly longer than before. What is the most likely cause?
Medium31A financial services firm deploys inbound SSL decryption to inspect all HTTPS traffic to their customer-facing web application. After enabling decryption, customers report that they are unable to connect to the web app and receive 'This site can’t provide a secure connection' errors. The firewall logs show no decryption errors, and traffic logs show the sessions are matched to the decryption rule but no decryption action is taken. The web app uses a wildcard certificate (*.example.com). The firewall's decryption certificate is imported from the server's private key. What is the most likely cause?
Hard32A security policy rule uses 'MyService' and 'ServerGroup'. What is the destination port of the allowed traffic?
Hard33A security engineer is troubleshooting a connectivity issue where internal users cannot reach a public web server hosted on the internet. The firewall is configured with a security policy that allows traffic from the internal zone to the external zone on port 80. The engineer notices that traffic is being dropped. Upon checking the session table, the engineer sees that the session is initiated correctly but the return traffic is not matching the existing session. What is the most likely cause?
Medium34A firewall is configured with multiple virtual systems (vsys). An administrator wants to allow traffic from vsys1 to vsys2 while keeping other inter-vsys traffic blocked. How should this be accomplished?
Hard35A company wants to block all social media except LinkedIn. Which combination of URL filtering actions should be implemented?
Easy36Which TWO actions should be taken to protect against DNS tunneling? (Choose two.)
Hard37A company's security policy uses application-based rules. However, some traffic from a new cloud application is being blocked even though the application is allowed in the rule. What should the administrator check first?
Medium38An administrator is configuring Network Address Translation (NAT) on a Palo Alto Networks firewall. Which of the following statements about the order of NAT rule evaluation is correct?
Medium39Refer to the exhibit. The administrator wants to remove unused rules to improve performance. Which rule should be removed?
Medium40Which TWO are best practices for managing security policies in a Palo Alto Networks firewall?
Medium41Match each Palo Alto Networks feature to its primary function.
Medium42How can an administrator quickly identify which security rules are not being used in order to clean up the rulebase?
Easy43An administrator configures SNMP monitoring on a firewall but receives no data from the SNMP manager. Which check should be performed first?
Medium44Refer to the exhibit. A decryption policy has two rules. Traffic destined to a web server is not being decrypted. What is the most likely cause?
Medium45A network engineer wants to configure a new VLAN interface on a Palo Alto Networks firewall. After creating the VLAN object and assigning it to an Ethernet interface, the VLAN interface remains down. What is the most likely cause?
Easy46Refer to the exhibit. A firewall administrator is troubleshooting a performance issue. The number of half-open TCP connections is unusually high. What is a likely cause?
Medium47A security architect is planning a deployment for a multi-tenant data center where each tenant requires isolated security policies and separate administrators. Which Palo Alto Networks architecture best meets these requirements?
Hard48A user from 10.0.0.5 tries to access 8.8.8.8 on TCP 443. The traffic is matched to the above rule. Which additional configuration is required for the traffic to be decrypted?
Medium49An organization wants to segment internal traffic between the Engineering and Finance departments and apply threat prevention. Which TWO actions should be taken? (Choose two.)
Medium50An administrator notices that SSH tunnels are being blocked by the firewall. According to the exhibit, what is the most likely cause?
Hard51An administrator wants to ensure that traffic from the corporate network to the internet is inspected by the firewall's threat prevention features. Which TWO of the following are required to achieve this? (Choose two.)
Easy52A company has two PA-220 firewalls in active/passive HA. They want to ensure that if the active firewall loses internet connectivity but its management interface remains up, a failover occurs. Which monitoring method should be configured?
Medium53A large enterprise uses dynamic address groups based on tags to manage firewall policies. The administrator notices that a specific address object is being incorrectly included in a dynamic address group that should only contain servers from a different region. What could be the reason?
Hard54Refer to the exhibit. A network administrator notices that SSL decryption performance has degraded. Based on the exhibit, which factor is most likely contributing to the performance issue?
Hard55Which three components are part of the Palo Alto Networks Next-Generation Firewall architecture? (Choose three.)
Easy56A university uses a Palo Alto Networks firewall to protect its network. They have implemented SSL Forward Proxy decryption for all student traffic. Recently, the IT helpdesk has received complaints from students that some websites (e.g., online banking, healthcare portals) are not loading properly. The firewall logs show that these sites are being decrypted, and no threats are detected. The university's legal team has advised that decryption of financial and healthcare sites may violate regulations. The network team wants to quickly resolve the issue while ensuring compliance. What is the best course of action?
Medium57What does a 'shadowed' rule mean in the context of policy evaluation?
Easy58A security engineer notices that HTTPS traffic to a critical business application is being decrypted and re-encrypted, causing performance issues. The application uses a certificate from a public CA. The engineer wants to minimize decryption overhead while still inspecting for threats. Which decryption policy configuration best achieves this?
Hard59A network administrator is migrating from a legacy firewall to a new Palo Alto Networks firewall. The current firewall has a large number of ACL rules that allow traffic based on source/destination IP and port. The administrator wants to convert these rules to App-ID based policies on the Palo Alto firewall. What is the recommended best practice to ensure a smooth migration while maintaining security?
Easy60Which Content-ID feature can be used to prevent credit card numbers from being sent via webmail applications?
Easy61An organization needs to send threat logs to two different syslog servers: one for real-time alerts and one for long-term storage. They also need to send traffic logs to the long-term storage syslog only. They have configured two syslog server profiles. What is the correct approach?
Hard62An administrator configured SNMP community and trap destination under Device > Setup > Services, but no traps are received. What additional configuration is needed?
Medium63A small business needs a firewall that supports at least 500 Mbps firewall throughput and includes integrated SD-WAN capabilities. Which TWO Palo Alto Networks platforms meet these requirements? (Choose two.)
Easy64Which of the following is a best practice when creating security policy rules on a Palo Alto Networks firewall?
Easy65A company uses App-ID to control cloud storage applications. Users report that uploads to Google Drive are blocked even though a rule allows 'google-drive-base'. What is the most likely cause?
Medium66A security policy rule references a service object "HTTP" which is pre-defined. What is the default port for the HTTP service object?
Easy67A security administrator needs to inspect traffic to a critical web server that uses HTTPS. The firewall is configured as a forward proxy for outbound traffic. Which decryption type should be used to decrypt the traffic inbound to the web server?
Easy68Which TWO of the following are valid methods to centrally manage multiple Palo Alto Networks firewalls?
Medium69After a security policy change, users complain that they cannot upload files to a custom web application. The rule allows the custom application 'webapp' and Content-ID is enabled. What is the most likely cause?
Hard70A security architect is evaluating the VM-Series firewall for a private cloud deployment. Which three features are specific to the VM-Series that differentiate it from physical Palo Alto firewalls? (Choose three.)
Hard71Which THREE are default security profile groups in PAN-OS? (Choose three.)
Easy72A firewall is configured with multiple virtual routers. Traffic from a host in Vsys A needs to reach a server in Vsys B. Both virtual routers have direct routes to their respective subnets. What additional configuration is required?
Hard73Drag and drop the steps to configure Active/Passive High Availability on a Palo Alto Networks firewall into the correct order.
Medium74Which TWO actions should be taken when configuring SSL Forward Proxy decryption? (Select exactly two.)
Medium75A network administrator is configuring a new security policy to allow specific inbound traffic to a web server. The policy must be as specific as possible to minimize risk. Which configuration approach is correct?
Medium76Which TWO actions can be taken in a security policy rule to allow traffic from the corporate network to the internet while also logging the traffic?
Medium77A security analyst uses Panorama to generate a custom report on all traffic using the application 'facebook-base' across the enterprise. The analyst creates a new report template in Panorama with the filter '(app eq facebook-base)' and runs the report for the past 30 days. The report returns zero results. However, when the analyst logs into a specific firewall and queries the traffic logs using the same filter, results appear. The analyst confirms that the firewall is configured to forward logs to Panorama and that Panorama receives logs from all firewalls. What is the most likely reason the Panorama report fails to return data?
Hard78A junior administrator is investigating a network issue where traffic to a critical server is being blocked. To see the specific security rule that matched and the action taken, which log should the administrator review?
Easy79A user at source IP 10.1.1.1 initiates an HTTPS connection to a web server on the internet. Which rule will the traffic match?
Medium80An organization uses multiple firewalls and wants to share dynamic address groups across them. Which feature should be used?
Hard81A firewall is experiencing high CPU utilization due to SSL decryption. The administrator wants to reduce the load without completely disabling decryption. Which action should be taken?
Hard82A network administrator wants to monitor traffic that is not decrypted due to a 'No Decrypt' policy rule. Which log type would show that decryption was bypassed?
Easy83A hospital network uses a Palo Alto Networks firewall with outbound SSL decryption. The IT security team notices that during peak hours, the firewall CPU utilization spikes to 95% when decryption is enabled, causing latency for all users. They have already upgraded to maximum licensed throughput and added a dedicated decryption engine. However, the issue persists. The network has 10,000 endpoints and 500 Mbps throughput. The decryption policy includes rules to decrypt all traffic to critical medical cloud services (EHR, PACS) and social media sites. What should the administrator do first to reduce CPU load?
Medium84A company uses SSL Forward Proxy decryption. The firewall's decryption certificate expires. What immediate impact does this have on traffic?
Medium85Drag and drop the steps to perform a packet capture (tcpdump) on a Palo Alto Networks firewall using the CLI into the correct order.
Medium86An administrator is using Policy Tester to validate a rule before deployment. The rule allows HTTP and HTTPS from user 'John' (IP 10.1.1.10) to server 192.168.1.100. The tester shows 'No match' for traffic from John's IP to the server on port 80. What could be the reason?
Hard87A company needs to block a list of known malicious domains that is updated daily by a threat intelligence vendor. Which Palo Alto Networks object should be used?
Medium88A firewall is configured with multiple Virtual Systems (vsys). An admin wants to assign a custom admin role that can manage only specific vsys. Which role type supports this?
Medium89Which TWO of the following are required when configuring a new virtual router on a Palo Alto Networks firewall?
Medium90A network administrator wants to allow FTP traffic from the internal network (zone: trust) to an external server (zone: untrust) while ensuring that the firewall can inspect the FTP control and data channels. Which security rule configuration is required?
Easy91An administrator wants to allow ping (ICMP) and SSH access on a data interface (e.g., ethernet1/1) for troubleshooting. Which configuration is required?
Hard92During a security audit, it is discovered that some traffic from the 'guest' zone to the 'untrust' zone is not being inspected by Threat Prevention profiles. The security rule that matches this traffic has a Threat Prevention profile applied. What is a likely reason for the lack of inspection?
Hard93A company uses Panorama to manage multiple firewalls. They have configured a template to push NTP settings, DNS, and authentication profiles. However, one firewall is not receiving the template settings. Which of the following is the most likely cause?
Hard94A company needs to receive email alerts for critical system events. What is the recommended method to configure email notifications on a Palo Alto Networks firewall?
Easy95A Palo Alto Networks firewall is configured with a security rule that allows 'web-browsing' and has a URL Filtering Profile to block 'malware' sites. However, users can still access known malware URLs. What is the most likely cause?
Hard96Match each Palo Alto Networks service to its typical use.
Medium97A syslog server is only reachable through a specific interface on the firewall. To ensure syslog logs are sent via that interface, which configuration is required?
Hard98Which THREE are valid components of Content-ID? (Choose three.)
Hard99A company wants to ensure that decryption policies are applied based on the user identity. The firewall is integrated with Active Directory. Which decryption policy matching criteria should be used?
Medium100An administrator notices that traffic from a specific IP 10.10.10.5 is not matching the expected security rule that should allow HTTP traffic. The rule uses a source address object defined as '10.10.10.0/24'. Upon investigation, the administrator finds that the traffic is from IP 10.10.10.5, but the rule still does not match. What is the most likely cause?
Hard101An administrator is configuring a new Palo Alto Networks firewall and wants to ensure that management access to the firewall is secure. Which of the following is a best practice for securing management access?
Medium102An admin creates an application group named 'web-apps' that includes 'web-browsing' and 'ssl'. They apply it to a security rule. However, traffic from a client accessing Facebook is being blocked. What is a likely reason?
Medium103A company wants to deploy a new firewall with a management interface on a separate VLAN to ensure management traffic is isolated from production traffic. Which interface type should be used for management access?
Easy104Refer to the exhibit. The administrator sees that traffic from 10.10.1.12 is being denied by rule2. Which action should the administrator take to allow this traffic while maintaining security?
Hard105Which monitoring tool in Palo Alto Networks firewall provides real-time visibility into decryption statistics, such as the number of sessions decrypted and certificate errors?
Easy106Refer to the exhibit. A network engineer observes a high number of SSL handshake failures. Which action is most likely to reduce these failures?
Hard107A security rule is configured with source zone 'Trust', destination zone 'Untrust', source address 'any', destination address '10.10.10.0/24', application 'ssl', service 'https', action 'allow', log at session end. A user from Trust zone tries to access https://10.10.10.5. The traffic is not matching. What is the most likely reason?
Medium108A multinational company has deployed a Palo Alto Networks firewall in a datacenter to provide internet access to employees in the corporate office and remote branches via IPsec VPN. The firewall is configured with multiple virtual routers, security zones (trust, untrust, dmz, vpn), and policies for application and URL filtering. Recently, users in the corporate office report that they cannot access a critical cloud-based CRM application (https://crm.company.com) from their workstations, while access from remote VPN users works fine. Other websites are accessible from the corporate office. The IT team has verified that DNS resolution is correct and that the CRM server responds to pings from the firewall's management IP. The security policy includes a rule from trust to untrust that allows application 'crm-base' and 'ssl' with URL category 'crm-sites'. The administrator has checked the traffic logs and sees that sessions are being denied with the reason 'application mismatch'. Which of the following is the most likely cause and correct course of action?
Hard109Which TWO of the following are types of decryption supported by Palo Alto Networks firewalls? (Choose two.)
Easy110Which THREE of the following are requirements for configuring High Availability (HA) on Palo Alto Networks firewalls?
Hard111A network administrator needs to block traffic to a specific external website. Which object type should be used in the security policy to define the destination?
Easy112Which three of the following services are commonly permitted on the management interface? (Choose three.)
Easy113An administrator wants to enforce that only certain approved applications can be used on the network. Which TWO features should be configured?
Easy114A company uses Panorama to manage multiple firewalls. The administrator wants changes made in Panorama to be automatically pushed to managed firewalls without manual intervention. Which setting should be enabled?
Medium115Refer to the exhibit. An administrator attempts to ping the firewall's management IP (192.168.1.1) from a host on the same subnet (192.168.1.0/24) but receives no response. What is the most likely cause?
Medium116A network administrator notices that traffic from the internal zone to the external zone is being denied, even though a security policy allowing all outbound traffic exists. The internal zone is configured with a zone protection profile that has Flood Protection enabled. What is the most likely cause of the denial?
Medium117Refer to the exhibit. A security analyst wants to ensure that all HTTPS traffic from internal users to the internet is decrypted for inspection. However, traffic from the 'corp-users' group is being blocked instead of decrypted. Which configuration change should be made?
Medium118Refer to the exhibit. An administrator notices that some HTTPS sessions are not being decrypted. Which configuration change would address the most common cause of decryption failures shown?
Medium119A large enterprise operates multiple data centers with a Palo Alto Networks firewall pair in each data center in active/passive HA. The firewalls are managed by Panorama. Recently, after a power outage in Data Center A, both firewalls in that data center came back online but are not passing traffic. The network team confirms that the switches and routers are operational. The Panorama administrator sees that both firewalls are connected and show green in the Managed Devices tab. However, the active firewall in Data Center A shows "HA state: passive" and the other firewall also shows "passive". The administrator suspects a configuration issue. What is the most likely cause and corrective action?
Hard120A network administrator wants to collect and analyze traffic logs from a Palo Alto firewall. Which two methods can be used? (Choose two.)
Easy121A security administrator wants to inspect decrypted traffic for threats. What is the minimum set of features required?
Easy122A company wants to ensure that all traffic from the internet to their internal web server is inspected for threats. Which configuration component is essential to achieve this?
Easy123A security administrator is reviewing best practices for creating security policies on a Palo Alto Networks firewall. Which two of the following are recommended practices?
Medium124A security administrator notices that traffic from a specific subnet is not being logged in the Traffic logs, although the traffic is allowed by a security policy rule. Which configuration setting should be verified?
Medium125When creating a security policy to block malware, which THREE profile types should be applied for comprehensive protection?
Medium126A network administrator wants to monitor HTTPS traffic without decrypting it, but still wants to identify the applications being used. Which feature can be used to identify HTTPS applications without decryption?
Medium127Which TWO statements about External Dynamic Lists (EDLs) are true?
Medium128Refer to the exhibit. The administrator notices that traffic from 192.168.1.100 to 10.1.1.1 using HTTPS is being blocked. What is the most likely cause?
Medium129A company has deployed a pair of PA-5250 firewalls in an Active/Passive HA configuration. The management network uses a separate subnet with addresses 10.0.0.0/24. The active firewall's management IP is 10.0.0.1, passive is 10.0.0.2. They have a virtual router configured with static routes. The HA configuration uses HA1 (backplane) for heartbeat and HA2 for session sync. After a power failure, both firewalls reboot. The active firewall comes up first and becomes active. The passive firewall later joins, but fails to become passive; it remains in 'non-functional' state. The administrator observes the following: - HA1 link is up on both firewalls. - HA2 link shows 'waiting for HA2 link' on the active. - The passive firewall's management IP is reachable. - The active firewall shows 'peer unreachable' in HA status. What is the most likely cause?
Hard130A firewall's management interface is configured with a public IP for remote management. After a firmware upgrade, HTTP access returns a 403 Forbidden error, but HTTPS works. What is the most likely cause?
Hard131An administrator wants to ensure that all traffic from the engineering zone to the server zone is logged, but only when a session is established. Which log setting should be configured in the security rule?
Easy132A decryption policy is configured to decrypt traffic to a specific external server. The admin notices that the traffic is not being decrypted. What is the first step in troubleshooting?
Medium133Refer to the exhibit. An administrator notices that SSH traffic from the trust zone to the untrust zone is being blocked. The administrator expected it to be allowed by rule 2. What is the most likely reason?
Easy134During troubleshooting, a firewall shows a large number of SSL decryption failures with error 'certificate_unknown'. The firewall is configured for forward proxy decryption. What is the most likely cause?
Hard135A financial services company uses a Palo Alto Networks firewall to protect its customer data. They have a requirement to block all file transfers that contain credit card numbers (PCI compliance). The firewall has Data Filtering profiles configured to detect credit card patterns. However, the security team notices that some file transfers containing credit card numbers are not being blocked. The traffic logs show the applications are identified correctly, and the security rule has the Data Filtering profile attached. The Data Filtering profile is configured with a rule to block 'Credit Card Numbers' with a threshold of 1. What could be the issue?
Medium136Refer to the exhibit. A user in the trust zone attempts to access https://www.example.com. The traffic matches rule 2 first. What is the expected behavior?
Medium137An administrator is troubleshooting decryption-related connectivity issues. Which two log types should be examined to gather information about decryption actions and errors?
Easy138A firewall administrator is troubleshooting a situation where traffic from the 'Engineering' zone (source zone) to the 'Servers' zone (destination zone) is being allowed, but the desired behavior is to block it. The administrator runs 'show running security-policy' and sees the following rules in order: Rule1: from Engineering to Servers allow; Rule2: from Engineering to Servers deny; Rule3: from any to Servers allow. Which TWO statements are true regarding policy evaluation?
Hard139What is the primary benefit of using App-ID in a security policy instead of relying solely on port-based rules?
Easy140An administrator needs to provide internet access to employees while blocking access to social media sites. Which feature should be used to identify and block social media traffic?
Easy141A company uses forward proxy decryption. A user cannot access an HTTPS site. The decryption policy is configured with the default SSL/TLS service profile. What is the most likely issue?
Easy142A small business uses a single PA-220 firewall for internet access and has three internal zones: Trust, DMZ, and Guest. Users in the Trust zone report intermittent connectivity to a public cloud application. The firewall administrator checks the traffic logs and sees that sessions to the cloud application show "Application: ssl" and "Action: allow". The administrator suspects the issue might be related to decryption. The firewall currently has a decryption policy that decrypts all outbound HTTPS traffic for threat inspection. The cloud application uses certificate pinning and breaks when decrypted. What is the best solution to allow this application to function while still decrypting other traffic?
Medium143A network administrator is designing a Palo Alto Networks firewall deployment for a large enterprise with multiple branch offices. The requirement is to ensure that if the primary firewall at headquarters fails, the branch offices can still access the internet via a local breakout using a redundant firewall at the branch. Which architecture best meets this requirement with minimal complexity?
Hard144Refer to the exhibit. A security rule is configured with destination address group 'internal-servers'. A packet with destination IP 10.10.20.5 arrives. Will the rule match?
Easy145A security administrator is troubleshooting a rule that appears to be matching correctly but is not allowing traffic. The rule uses source zone 'Trust' and destination zone 'Untrust', and the action is 'allow'. The traffic source is in the 'DMZ' zone. What is the most likely reason the traffic is denied?
Medium146Drag and drop the steps to configure a URL filtering profile on a Palo Alto Networks firewall into the correct order.
Medium147An organization has a data center with servers in the 10.10.0.0/16 subnet and remote users who connect via GlobalProtect. The security team wants to ensure that only approved applications (web-browsing, ssl, dns) are allowed from the remote user subnet (172.16.0.0/24) to the data center. They create a security rule with source zone 'GP' (GlobalProtect), destination zone 'DC', source address '172.16.0.0/24', destination address '10.10.0.0/16', application 'web-browsing', 'ssl', 'dns', action 'allow'. After deployment, users complain that they cannot access a custom web application on port 8080, which uses HTTP but the application is identified as 'web-browsing'. The administrator checks the traffic logs and sees that the traffic is being denied by an implicit deny rule. What is the most likely cause?
Hard148A security administrator needs to create an address object for a single host with IP address 192.168.1.100. Which address type should the administrator choose?
Easy149An organization has a security policy that requires all outbound HTTP traffic from the 'Corporate' zone to the 'Internet' zone to be inspected by the URL Filtering profile. However, the administrator notices that some users can still access blocked categories. What is the most likely cause?
Medium150A security administrator manages a Palo Alto Networks firewall in a large enterprise. The company has multiple remote sites connected via IPSec VPNs. Each site has its own subnet (e.g., Site A: 10.10.1.0/24, Site B: 10.10.2.0/24). The administrator needs to create a security policy that allows all inter-site traffic but blocks all traffic to and from the internet except for specific services. The administrator wants to use address groups to simplify management. Currently, there are address groups for each site (e.g., 'Site-A-Networks', 'Site-B-Networks') containing the respective subnets. The administrator also has an address group 'Internet-Allow' for allowed external IPs. The policy should have a rule that permits traffic from any site to any other site, and a rule that permits traffic from internal networks to the 'Internet-Allow' group for destination ports 80 and 443. Which of the following approaches best achieves this with minimal administrative overhead?
Hard151A firewall is configured with decryption and a custom SSL/TLS service profile that has 'Block Expired Certificates' enabled. After renewing a server certificate, some users are unable to access the site. The server certificate is correctly installed. What could be the issue?
Hard152A network administrator notices that the firewall's dataplane CPU is consistently above 80% during peak hours. The administrator wants to reduce CPU load without impacting security. Which action should the administrator take?
Medium153A PA-5250 firewall is experiencing high CPU usage on the dataplane. Analysis shows that a large amount of traffic is being processed by the application identification engine. What can be done to reduce the CPU load?
Hard154A distributed enterprise has multiple firewalls at different sites. They want to map user IP addresses to usernames using the User-ID agent. The agent must be deployed in a way that minimizes unnecessary traffic and provides redundant coverage. What is the recommended deployment?
Hard155Refer to the exhibit. A user on the Sales subnet (10.10.1.50) attempts to browse to an external website using HTTP (port 80) to download a legitimate file. The website's IP is 203.0.113.50. Which rule will match this traffic?
Easy156During a security audit, it is discovered that some applications are being incorrectly identified by the Palo Alto Networks firewall. What should the administrator do to improve application identification accuracy?
Hard157Which TWO methods can be used to create a custom App-ID signature?
Medium158Which TWO are capabilities of Content-ID? (Choose two.)
Easy159A company wants to block file uploads of PDFs to the internet via HTTP. Which Content-ID profile should be configured?
Easy160Which TWO types of address objects can be used in a security policy? (Choose two.)
Easy161A company has multiple branch offices that use overlapping private IP ranges (192.168.0.0/16). To avoid conflicts when these branches connect to the data center via IPsec, the administrator needs to translate branch source IPs to unique addresses. Which object type is best suited for this task?
Medium162An administrator needs to quickly back up the device configuration to facilitate restoration after a hardware failure. Which method ensures the most reliable restoration?
Easy163A company uses SSL Forward Proxy decryption. After implementing, they notice that some internal applications that use client certificate authentication are failing. What is the most likely cause?
Hard164An administrator notices repeated login failures from external IP 10.0.0.1 in the system logs. The admin wants to permanently block all traffic from that IP. Which approach is best practice?
Hard165A company has a Palo Alto Networks firewall in production. They recently configured a new security policy rule to allow outbound HTTPS traffic from the internal network (10.0.0.0/8) to the internet. The rule is placed after a block rule that denies all traffic from 10.0.0.0/8 to any external destination. After committing, users report that HTTPS access is still blocked. The administrator checks the firewall logs and sees that the traffic is being denied by the block rule. The administrator verifies the rule order: the new allow rule is at position 5, and the block rule is at position 3. The administrator also checks that the source zone (Trust) and destination zone (Untrust) are correct. What is the most likely cause of the issue?
Hard166Based on the log entry, what is the most likely reason for the TCP reset from the client?
Hard167Refer to the exhibit. A user at IP 10.1.1.5 on the untrust zone is trying to access a server on the trust zone. The traffic is being blocked by a default deny rule instead of being allowed by rule1. What is the most likely reason?
Hard168A network administrator recently changed the admin password on a Palo Alto Networks firewall and logged out. The next day, the administrator attempts to log in via SSH but receives 'access denied' after three attempts. The administrator typically uses SSH from a management workstation. The firewall's management interface is still reachable via ping. The administrator suspects the account may be locked due to failed attempts. Since the administrator is not currently logged in, there is no way to unlock the account remotely. The administrator has physical access to the data center and can connect a laptop to the console port. What is the most efficient way to regain administrative access to the firewall?
Medium169An organization uses App-ID to allow 'web-browsing' but notices that some web traffic is being blocked. The traffic is HTTP over port 8080. What is a likely cause?
Hard170An administrator wants to synchronize the firewall's clock with a central NTP server. Where is this configured?
Easy171A company has a decryption policy that decrypts all outbound SSL traffic. Recently, users accessing a partner website receive a certificate warning. The partner uses a self-signed certificate. The firewall is configured with a CA-signed certificate for decryption. Which action should the firewall take?
Hard172Refer to the exhibit. A firewall has the configuration shown. A security policy allows traffic from the internal zone to the external zone. However, users on the internal network (192.168.1.0/24) cannot reach the internet. What is the most likely cause?
Medium173A company deploys a Palo Alto Networks firewall in a cloud environment using the VM-Series. The firewall must scale to handle traffic spikes. Which architectural approach provides the best elasticity and management simplicity?
Medium174A company's security policy must allow Microsoft Teams traffic but deny all other chat applications. Which type of object should be specified in the 'Application' column of the security policy rule?
Easy175During an App-ID upgrade, some applications are no longer identified correctly. What is the most likely cause?
Hard176Refer to the exhibit. An admin adds a new address object 'web-04' with IP 10.0.0.4 and applies it to a security policy that references the address group 'web-servers'. However, traffic to 10.0.0.4 is not allowed. What is the most likely cause?
Medium177During a security audit, it is discovered that some internal hosts are using TLS 1.0, which is deprecated. The firewall is configured to decrypt SSL traffic. How can the administrator use the firewall to detect and report these connections without breaking them?
Hard178Refer to the exhibit. A user in the trust zone accesses a banking site (category: financial-services). What action will the firewall take on this HTTPS session?
Medium179Which THREE factors should be considered when troubleshooting App-ID misidentification? (Choose three.)
Hard180A network administrator notices that traffic for a custom business application is being incorrectly identified as 'ssl' by the firewall. What is the most efficient way to ensure this application is accurately identified without impacting other SSL traffic?
Medium181Which TWO security profile types are used to block known malware? (Choose two.)
Easy182Refer to the exhibit. A security analyst notices that URL filtering is blocking some requests, but decryption is working. What can be concluded about the traffic that is being decrypted?
Medium183Which TWO of the following are valid methods to bypass URL filtering for internal users while still enforcing it on external traffic?
Medium184Which TWO of the following are key benefits of using an Application-Based Security Policy compared to a Port-Based Security Policy? (Choose TWO.)
Medium185Refer to the exhibit. What does this log indicate?
Hard186An administrator wants to allow only specific applications (e.g., web-browsing, ssl) from the internal network to the internet. Which object type should be used in the security policy application field?
Medium187An administrator needs to decrypt HTTPS traffic from external users to the company's web servers. Which decryption policy should the administrator configure?
Medium188A financial services company uses a Palo Alto Networks PA-5220 firewall in an active/passive HA pair at their headquarters. They have a single zone 'Trust-LAN' for internal users and a single zone 'Untrust-WAN' for internet traffic. The security policy currently includes a rule that allows all outbound HTTP/HTTPS traffic from 'Trust-LAN' to 'Untrust-WAN' with no security profiles applied. Recently, users have been complaining about slow internet performance, and the IT team suspects malware or botnet activity. The firewall's logs show numerous sessions to known malicious IPs, but the firewall is not blocking them. The network architect decides to implement URL Filtering and Threat Prevention profiles on the outbound rule. However, after committing the changes, some users report that legitimate websites (e.g., online banking, cloud apps) are being blocked. The IT team verifies that the URL Filtering profile is set to 'alert' for all categories except 'malware' which is 'block', and the Threat Prevention profile is set to 'default' action. What is the most likely cause of the legitimate website blocking?
Hard189A Panorama-managed firewall currently allows SSH access from any IP. The security policy requires that administrative access to the firewall be possible only from Panorama. What should be configured?
Medium190A security engineer is troubleshooting why YouTube video streaming is not being identified as 'youtube-streaming' but instead as 'youtube-base'. What could be the reason?
Medium191Refer to the exhibit. A security engineer observes that SSL decryption is not working for session 1. The policy and session table are shown. What is the most likely reason?
Hard192An administrator needs to allow inbound SMTP traffic to a mail server located in the DMZ. The firewall has a public IP address on the external interface. Which configuration is necessary to ensure the mail server receives the traffic?
Medium193Which TWO statements are true regarding App-ID and Content-ID? (Choose two.)
Medium194A company uses Panorama to manage multiple device groups. They want to push a set of global security policies to all firewalls. Where should the administrator configure these policies in Panorama?
Hard195A user reports that they cannot download PDF files from a corporate web application. The security policy has a File Blocking Profile applied to deny 'PDF' files. The web application uses 'ssl' and 'web-browsing' apps. What should the administrator verify first?
Medium196Refer to the exhibit. A user on the Trust zone is trying to download a file from an FTP server on the Untrust zone using FTP on TCP port 21. The firewall's security policy is as shown. What will happen?
Medium197An organization is experiencing performance degradation on their PA-5250 firewall after enabling SSL decryption for all traffic. The firewall's CPU usage is consistently above 80%. The decision is made to offload SSL decryption to a dedicated appliance. Which deployment architecture allows the Palo Alto firewall to inspect decrypted traffic while the decryption occurs elsewhere?
Hard198Refer to the exhibit. An administrator notes that traffic to Facebook is being denied. What is the most likely reason?
Medium199A network admin needs to push a security policy change to firewall-01 and firewall-02. Both firewalls have different interface configurations but should share the same security rules. What is the best way to achieve this using Panorama?
Easy200An organization is experiencing high CPU utilization on the firewall dataplane, causing latency in packet processing. The administrator notices that a large number of small packets are being processed by a specific security rule that allows any service. What is the best first step to reduce CPU load without impacting legitimate traffic?
Hard201A security administrator notices that a security policy rule is not matching traffic that should be allowed. The rule specifies source address as 10.0.1.0/24, destination address as 192.168.2.0/24, and application 'web-browsing'. The traffic originates from 10.0.1.5 to 192.168.2.10 using HTTPS. The traffic log shows that another rule with higher priority is matching and denying the traffic. What should the administrator check first?
Medium202Which THREE of the following are valid actions for a decryption policy rule? (Choose three.)
Medium203Refer to the exhibit. A network administrator sees this output from a Palo Alto Networks firewall. What does the 'System mode: virtual' indicate about this firewall?
Medium204A company wants to block file-sharing applications like BitTorrent, but allow HTTP and HTTPS. Which type of policy is most appropriate to achieve this granular control?
Easy205A user reports that they are unable to download executable files from the internet. The firewall security rule allows the application. What should the administrator check first?
Medium206Which TWO statements about App-ID are correct? (Choose two.)
Medium207Which THREE components are required to successfully decrypt outbound SSL traffic using forward proxy? (Choose three.)
Hard208A security administrator wants to block users from accessing social media websites during business hours. The firewall is connected to the internet and has a Security policy that allows general web browsing. What is the most efficient way to block social media?
Easy209A network administrator needs to restrict which source IP addresses can access the firewall's web management interface. Which feature should be configured?
Medium210A security engineer wants to block downloading of executable files over HTTP and HTTPS, but allow all other web traffic. Which Content-ID feature should be configured to achieve this granular control?
Hard211A network administrator is tasked with implementing a policy that allows traffic from the 'Sales' zone to the 'Internet' zone only for web-browsing (application: web-browsing) and blocks all other traffic. The administrator creates a rule at the top of the security policy with source zone Sales, destination zone Internet, application web-browsing, action allow. Below that, a rule with source zone Sales, destination zone Internet, application any, action deny. After committing, users in Sales can browse the web normally. However, the administrator discovers that some users are able to use applications like YouTube and Facebook which use web-browsing as part of their app-id. The administrator wants to ensure that only HTTP/HTTPS traffic for general web browsing is allowed, not other web-based applications. What should the administrator do?
Medium212Which two authentication methods can be used for administrative access to the firewall's web interface? (Choose two.)
Medium213During a security audit, it is discovered that some users are bypassing the company's web proxy by using HTTPS to external websites. The firewall is configured to allow 'web-browsing' application. What is the best way to enforce proxy usage for all HTTP/HTTPS traffic?
Hard214An organization uses GlobalProtect for remote access. They want to ensure that only compliant devices can connect. Which TWO GlobalProtect features should be enabled?
Hard215Which TWO logs are most useful for troubleshooting SSL decryption issues? (Select exactly two.)
Easy216A firewall uses an external SMTP server for email alerts. The SMTP server is reachable via a specific virtual router and interface. What must be configured to ensure the firewall uses the correct path to reach the SMTP server?
Easy217Refer to the exhibit. A newly deployed web server has an address object with tags 'Production' and 'Web'. However, the 'Allow SSL to Internet' security rule using the dynamic address group 'MyServers' as source is not matching traffic destined to the internet. What is the most likely cause?
Hard218During a security audit, an administrator notices that a security policy rule uses an address group that includes an FQDN object. The FQDN resolves to multiple IP addresses that change frequently. What is the best practice for ensuring the firewall uses the current resolved IPs without manual intervention?
Hard219After making configuration changes, an administrator clicks 'Commit' but the changes are not applied. What is the most likely cause?
Medium220A company uses Panorama to manage multiple firewalls. After pushing a template change, one firewall fails to commit with error 'invalid certificate path'. What is the most likely cause?
Hard221An administrator wants to require users in the Internal zone to authenticate via User-ID before accessing the Internet. Which policy configuration is necessary to enforce this requirement?
Medium222An organization uses a custom ERP system that communicates over TCP port 4444. The firewall's App-ID incorrectly identifies some of the traffic as 'ssl' because the ERP system uses a proprietary encryption wrapper. What is the recommended approach to ensure correct identification?
Hard223An organization is implementing a high availability pair of Palo Alto firewalls in active/passive mode. Which three actions are necessary for proper failover functionality? (Choose three.)
Medium224A security administrator notices that traffic from a custom application is being incorrectly identified as web-browsing. The application uses a proprietary protocol on TCP port 8080. What is the most efficient way to ensure correct identification without disabling App-ID?
Medium225A firewall administrator is configuring SSL decryption for internal users. Which THREE components are required for forward proxy decryption to function properly? (Choose three.)
Hard226An administrator needs to block traffic from a specific internal IP address to the internet. Which object type should be used in the security policy source field?
Easy227An admin notices that decryption is failing for some sites with error 'SSL Handshake Failed' in the traffic log. The decryption policy uses a custom SSL/TLS service profile with 'Allow Self-Signed Certificates' enabled. The firewall's certificate was issued by an internal CA. What should the admin check first?
Medium228A security analyst wants to send firewall logs to an external syslog server for long-term storage. Which three configuration steps are necessary?
Medium229A large financial institution runs a PA-5250 firewall in a virtual wire mode between two core switches. The firewall is configured with multiple virtual wire sub-interfaces to segregate traffic for different VLANs. Recently, the security team noticed that multicast traffic from a critical trading application is not being forwarded across the virtual wire link. The firewall has multicast policies enabled, and the trading application uses IGMPv3. The administrator has verified that the firewall's multicast policy allows the traffic and that the IGMP snooping is enabled on the adjacent switches. However, the multicast stream does not reach the receivers on the other side. Which step should the administrator take to resolve this issue?
Hard230Refer to the exhibit. An administrator sees this output and notices that App-ID is not identifying applications. What is the most likely cause?
Easy231A security admin wants to allow network engineers to log in to the firewall using their existing Active Directory credentials while maintaining a local admin account for emergency access. What should be configured?
Easy232Which THREE actions can be taken based on hit counts in security rules? (Select three.)
Medium233An administrator sees the above traffic log entries. What can be concluded about the traffic to 192.168.1.1?
Easy234A company has deployed PA-220 firewalls at 50 branch offices, each connected to the corporate headquarters via IPSec VPN tunnels. Recently, users have reported slow file transfers across the VPN, especially for large files. The network team has checked link utilization and found that the VPN tunnel bandwidth is under 20% utilized, and CPU on the firewalls is around 40%. The security policies are basic, with no threat prevention profiles applied to the VPN traffic. The team suspects the issue is related to VPN performance. After reviewing the configuration, they notice that the VPN tunnels are configured with default settings. Which of the following actions would most likely improve VPN throughput without requiring hardware upgrades or changing the security level?
Hard235A user reports being unable to access an external FTP server, but other users can access it. The firewall logs show the traffic being denied. What should the administrator check first?
Medium236A network administrator needs to ensure that firewall-generated traffic (e.g., NTP queries, DNS lookups, Panorama communications) uses a specific source IP address from a loopback interface. Which two configuration steps are required? (Choose two.)
Medium237An administrator upgrades a firewall from PAN-OS 9.1 to 10.0, but a subsequent commit fails. Which log should the administrator examine first to find the cause of the failure?
Easy238A company wants to ensure that all internet-bound HTTP traffic is decrypted for inspection before being forwarded to the next-generation firewall for policy enforcement. Which deployment method should be used?
Easy239A network administrator is configuring a Palo Alto Networks firewall in a datacenter. Which TWO traffic types can be inspected by the firewall's Threat Prevention subscription? (Choose two.)
Easy240Which THREE of the following actions are valid actions for a security policy rule on a Palo Alto Networks firewall? (Choose THREE.)
Hard241An organization has implemented SSL forward proxy decryption. Users on Windows workstations report that many HTTPS sites show certificate errors. The firewall's decryption policy is configured correctly. What is the most likely cause?
Hard242An administrator wants to create a service object for TCP port 8080 and call it 'web-proxy'. Which properties must be specified?
Medium243Refer to the exhibit. An administrator notices a high number of decryption failures. What is the most likely cause?
Medium244After a firewall upgrade, the system clock shows a time that is five minutes behind the actual time, even though NTP is synchronized. What is the most likely cause?
Hard245After enabling password complexity on a Palo Alto firewall, an administrator is unable to access the management web interface remotely. The administrator can still access the console locally. What is the most likely cause?
Hard246Which THREE log types can be forwarded to a syslog server?
Hard247An administrator creates a custom service object for TCP port 3389. What is the standard name for this service?
Medium248A security administrator notices that traffic from the internal trust zone to the external untrust zone is being allowed despite a security policy rule explicitly denying that traffic. The rule is present in the policy list and the match conditions seem correct. What is the most likely cause of this issue?
Medium249What is the purpose of the 'Telemetry' feature in PAN-OS?
Easy250Refer to the exhibit. A user at IP 10.10.10.10 tries to browse to http://192.0.2.50. Which rule matches this traffic?
Easy251An organization wants to hide internal IP addresses when accessing the Internet. Which type of NAT should be configured?
Easy252Which TWO statements correctly describe best practices for managing security policies in Palo Alto Networks firewalls? (Choose two.)
Medium253Which object type is used to group multiple service objects together for use in a security policy?
Easy254Refer to the exhibit. An administrator configured a dynamic address group named 'WebServers-Group' with filter 'WebServer-*'. However, the group does not include the address objects 'WebServer-1' and 'WebServer-2'. What is the most likely reason?
Medium255An administrator is troubleshooting why an application is being identified as 'incomplete' in the traffic log. What does this indicate?
Hard256A security team wants to inspect traffic to and from a critical application server. They configure an inbound decryption rule to decrypt traffic destined to the server's IP address. After deploying, they find that traffic is not being decrypted. What is the first step to troubleshoot?
Hard257Which Palo Alto Networks subscription service provides real-time threat intelligence about unknown files and links?
Easy258Which TWO are methods used by App-ID to identify applications? (Choose two.)
Easy259A network administrator manages a Palo Alto Networks firewall in a datacenter. They have configured dynamic address groups (DAGs) to automatically include servers based on tags. The tags are assigned via User-ID from Active Directory. The administrator notices that some servers that should be in the DAG are not appearing, while others are correctly added. The firewall is configured to receive User-ID information from a domain controller via the PAN-OS Agent. The tags are correctly assigned in Active Directory. What should the administrator verify first?
Hard260A network security engineer at a large enterprise is troubleshooting an issue where web traffic (HTTP and HTTPS) from the corporate LAN to the internet is being incorrectly classified by the Palo Alto Networks firewall. The firewall is running PAN-OS 10.2. The security policy has an App-ID based rule that allows 'web-browsing' and 'ssl' applications to the internet. However, legitimate web traffic is being blocked by a different rule that denies 'unknown-tcp' traffic. The engineer has verified that the firewall has internet connectivity and that the SSL decryption is not configured. The engineer also confirmed that the application override is not configured for any of the affected IPs. What is the most likely reason for the misclassification, and what action should the engineer take to resolve the issue?
Medium261A company uses a Palo Alto Networks firewall to control outbound access. They have created custom application filters to block social media and streaming. However, they need to allow a specific corporate YouTube channel for training videos. The administrator creates an application group "Corporate-YouTube" containing the "youtube-base" application, and adds a security rule to allow traffic from internal users to the application group. Despite this, users still cannot access the corporate YouTube channel. What is the most likely reason?
Medium262Which THREE are valid methods to test security policy effectiveness before deployment?
Medium263Which THREE of the following are valid steps when configuring a new virtual wire (vwire) on a Palo Alto Networks firewall?
Hard264An administrator needs to check the system uptime of the firewall. Which CLI command should be used?
Easy265A firewall is configured to send logs to an external syslog server. Some logs are missing, but other logs are arriving. Which step should be taken to troubleshoot this issue?
Hard266Which two components are part of Content-ID? (Choose two.)
Easy267Which Content-ID feature can be used to prevent data loss by blocking specific patterns in traffic?
Easy268A network administrator wants to allow FTP traffic from the internal network to a specific external server. The administrator creates a security policy rule with source zone 'internal', destination zone 'external', destination IP of the server, and application 'ftp'. However, the traffic is still blocked. What is the most likely reason?
Easy269During troubleshooting, an administrator needs to review firewall system events such as user logins, configuration changes, and commit failures. Which log type should be examined?
Easy270A security team notices that traffic from a specific internal subnet is not being inspected by the firewall. They have configured a security policy rule that matches the subnet and allows the traffic, but the traffic is still not being logged or inspected. What is the most likely cause?
Easy271A medium-sized enterprise has deployed a Palo Alto Networks firewall in a branch office. They use App-ID to control access to cloud applications. Recently, they migrated from on-premises Exchange to Office 365. They have a security rule that allows 'office365-base' for all users. However, users report that they cannot access their Office 365 email via Outlook client, although web access works fine. The firewall logs show that the traffic is being allowed as 'office365-base' but no other Office 365 sub-applications are seen. The IT team suspects that App-ID is not fully identifying the Outlook client traffic. What should they do to resolve this issue?
Medium272Drag and drop the steps to configure a site-to-site IPsec VPN on a Palo Alto Networks firewall into the correct order.
Medium273Refer to the exhibit. A network engineer executes the "show system info" command and sees the above output. Based on the model and PAN-OS version, which of the following is true about this firewall?
Medium274An administrator is reviewing the rulebase and finds a rule with a hit count of 0 over the past 30 days. What action should the administrator consider?
Easy275Two PA-3220 firewalls are configured in an active/passive HA pair. The passive firewall's configuration becomes out of sync with the active firewall after a software upgrade. What is the most efficient way to resynchronize the configuration?
Hard276A firewall administrator notices that traffic from an internal user is being decrypted, but the user's browser shows a certificate warning. The firewall uses a CA certificate issued by the company's internal PKI. What is the most likely reason for the browser warning?
Hard277An administrator has created an address group that includes an FQDN address object. When the FQDN's IP address changes, how does the firewall update the group?
Medium278A company uses Active Directory for user authentication. They want to enforce security policies based on user identity. What is the required first step to enable User-ID on the Palo Alto Networks firewall?
Easy279Refer to the exhibit. A user from the trust zone (10.0.0.5) is trying to access a web server at 203.0.113.1 on port 80. The firewall shows a session with application 'incomplete'. What is the most likely reason for this?
Medium280An administrator wants to ensure that a specific security policy rule is applied before all other rules. What should be configured?
Medium281An administrator notices that the firewall's web interface is accessible via HTTPS but shows an expired certificate warning. The firewall's management certificate was issued by an internal CA and has a validity of two years. The administrator checks the certificate and sees it expired yesterday. The administrator generates a new self-signed certificate through the firewall's GUI. After generating, the administrator assigns the new certificate to the HTTPS management interface. Despite this, the firewall still presents the old expired certificate when accessed. What is the most likely cause?
Hard282A security administrator is troubleshooting an issue where users cannot access a specific website. The security policy allows web-browsing from the internal zone to the external zone. Which TWO actions should the administrator take to verify the traffic is being matched and allowed?
Easy283A security analyst is troubleshooting a decryption issue. Which TWO logs are most useful for identifying decryption failures? (Choose two.)
Easy284Which TWO methods are valid for managing a Palo Alto Networks firewall? (Select two)
Medium285Which of the following is a primary benefit of using App-ID in a security policy?
Easy286Refer to the exhibit. The firewall is currently running PAN-OS 9.1.4. The administrator wants to upgrade to the latest available version shown. What should the administrator do first?
Medium287Which TWO conditions must be true for intra-zone traffic to be allowed between two interfaces in the same zone?
Medium288A company has a single Palo Alto Networks firewall protecting its internet connection. The IT team wants to allow remote employees to access internal resources using GlobalProtect. They have already configured the portal and gateway on the firewall, and users can successfully connect and obtain an IP address from the IP pool assigned to the gateway. However, remote users report that they cannot access any internal servers after connecting. The firewall has security policies that allow traffic from the GlobalProtect gateway's IP pool to the internal servers. Which additional configuration step is most likely required?
Easy289A company has a security policy that allows 'ssl' application but does not have SSL decryption enabled. What can App-ID still identify from the encrypted session?
Medium290A company is designing a high availability deployment and wants to minimize downtime. Which two configurations are required for session failover? (Choose two.)
Medium291Which TWO of the following are stages in the packet processing flow on a Palo Alto Networks firewall?
Easy292A firewall is configured for inbound inspection decryption. Which certificate must be installed on the firewall for this to work?
Easy293An organization uses GlobalProtect for remote access. Users report that they cannot connect to the portal. The firewall's GlobalProtect portal configuration is correct, and the firewall has a valid certificate. What is the most likely cause of the issue?
Hard294Refer to the exhibit. An administrator configured SSH decryption, but the firewall logs an error. What is the most likely cause of this error?
Hard295Match each security zone type to its characteristic.
Medium296Which THREE actions can improve firewall performance by reducing CPU load? (Choose three.)
Hard297A security administrator notices that a newly added security rule, designed to allow SSH traffic from the engineering department to a Linux server, is not being matched. The rule is placed above an existing 'deny all' rule. What is the most likely cause?
Easy298A security analyst needs to monitor decryption performance and identify sessions that are bypassing decryption due to policy or technical reasons. Which two monitoring tools or methods can provide this insight?
Hard299During SSL decryption, which three factors can cause the firewall to fail to decrypt a session or to bypass decryption?
Medium300Which TWO are required for accurate application identification when an application uses non-standard ports?
Hard301Which TWO management methods allow CLI access to a Palo Alto Networks firewall?
Easy302A security administrator notices that traffic from an internal user to a specific external web application is being blocked unexpectedly. The user's IP is 10.10.1.50 and the destination is 203.0.113.5 on port 443. The administrator has already verified that there is a security rule allowing the traffic. Which two logs should the administrator check first to diagnose the issue?
Medium303An administrator is troubleshooting why a rule is not being hit. The rule has source zone Trust, destination zone Untrust, source address 10.0.0.0/8, destination address any, application web-browsing, action allow, and log at session end. The traffic is coming from 10.1.1.1 to 1.2.3.4 on port 80, zone Trust to Untrust. The rule count shows zero hits. What could be the issue?
Medium304A company uses SSL Forward Proxy to decrypt all outbound HTTPS traffic. Users report significant performance degradation when accessing external web applications. Which action should the administrator take to improve performance while maintaining security?
Medium305A security administrator is analyzing the rulebase for best practices. Which TWO of the following are recommended practices for security policy management? (Choose two.)
Medium306An administrator needs to access the firewall's CLI via SSH, but the default SSH port (22) is blocked by the corporate firewall. Which configuration allows SSH on a non-standard port?
Easy307An administrator configures a security policy with three rules in order: Rule1 allows any to any with log at session start, Rule2 allows HTTP from trust to untrust, Rule3 denies any. Traffic from an internal user to an external web server is logged as allowed. Which rule processed the traffic?
Hard308Refer to the exhibit. Traffic from Sales zone to Finance zone reaches destination 10.10.10.10 using application 'ssl'. What action does the firewall take?
Hard309A company wants to decrypt all SSL/TLS traffic from internal users except traffic to financial sites. The firewall is placed as a forward proxy. Which policy configuration ensures that traffic to financial sites is not decrypted?
Medium310Which TWO methods can be used to help prevent rule shadowing? (Select two.)
Easy311A company is deploying a Palo Alto firewall in a high-availability (HA) pair. They want to ensure that when a failover occurs, session information is preserved to maintain active connections. Which feature must be enabled?
Hard312An administrator wants to block all peer-to-peer file sharing traffic, but must ensure that legitimate business applications like FTP are not affected. Which approach is most effective?
Medium313A network engineer needs to apply the same security policy to multiple firewalls. Which tool should be used to centralize policy management?
Easy314A firewall administrator is tasked with implementing a policy that allows SSH access from the 'Admin' zone to the 'Core' zone only for specific administrators, and all other SSH attempts should be logged and dropped. The company has a large number of administrators. Which method is most efficient and scalable?
Hard315An administrator wants to group multiple servers with different IP addresses that all use the same port 443. What is the most efficient way to create a security policy rule for this traffic?
Easy316A company configures GlobalProtect for remote access. Remote users can successfully connect to the firewall and obtain an IP address, but they cannot access internal resources (e.g., file servers) located in the internal network. The firewall has a security rule that allows traffic from the GlobalProtect zone to the internal zone with appropriate applications. Logs show that traffic from remote users is being matched to a different rule that denies inter-zone traffic from the GlobalProtect zone to the internal zone. The administrator checks the GlobalProtect gateway configuration and sees that the gateway assigns IP addresses from a pool, but no internal routes are defined. What is the most likely issue? The GlobalProtect gateway configuration is missing internal resource routes or split-tunneling settings. The User-ID agent is not mapping remote usernames correctly. The source zone in the security rule is set to 'Trust' instead of 'GlobalProtect'. The internal resources require a specific security profile that is not applied to the rule.
Medium317An enterprise wants to receive SNMP traps from their firewalls for critical events such as HA state changes and high CPU usage. They have an SNMP trap receiver at 10.1.1.100. What configuration steps are required?
Medium318Match each protocol to its default port used by Palo Alto Networks.
Medium319A security administrator is troubleshooting a policy misconfiguration. The firewall is configured with a security rule that allows traffic from the 'Engineering' zone to the 'Servers' zone. However, traffic from an Engineering user to a server in the 'DMZ' zone is being denied. What is the most likely cause?
Medium320A network administrator is troubleshooting a connectivity issue where users in the 192.168.1.0/24 subnet cannot reach a server at 10.0.0.10. The firewall has a rule that allows traffic from source zone 'Trust' to destination zone 'DMZ' with source address 192.168.1.0/24 and destination address 10.0.0.10. The traffic is matching the rule, but the packets are being dropped. What is the most likely reason?
Hard321Which TWO of the following are best practices for configuring SSL Forward Proxy decryption? (Choose two.)
Hard322An organization is deploying a firewall in a high-availability (HA) pair. The administrator wants to ensure that session state is synchronized between the firewalls so that active sessions are not dropped during failover. Which configuration is required?
Hard323An organization is deploying a Palo Alto Networks firewall in a data center to segment traffic between three application tiers: web, app, and database. The web servers must be accessible from the internet, the app servers must only be reachable from the web servers, and the database servers must only be reachable from the app servers. Which security policy design best meets these requirements?
Medium324A network administrator notices that a specific user behind a PA-820 firewall is unable to reach a critical SaaS application, while other users can access it without issues. The administrator checks the traffic logs and sees the session is being denied. Which step should the administrator take next to identify the root cause?
Medium325How many address objects are members of the 'web-servers' address group?
Easy326Refer to the exhibit. The firewall is experiencing performance issues and dropping sessions. Based on the exhibit, what is the most likely cause?
Medium327Refer to the exhibit. The firewall raises a certificate expiry warning for the decryption CA. Which action is required?
Easy328A security administrator is configuring an address object for a web server accessible from the internet. The server has a public IP of 203.0.113.10/32 and a private IP of 10.0.1.10/32. The administrator needs to create a security policy that allows inbound HTTPS traffic to the server. Which address object type should be used for the destination?
Medium329A security administrator notices that traffic from a custom application is being incorrectly identified as web-browsing. What is the most likely cause?
Easy330An administrator needs to block all traffic from a specific application that uses multiple ports. Which TWO methods can achieve this? (Choose two.)
Easy331An organization wants to prevent data exfiltration via DNS tunneling. Which security profile should be applied to the outbound DNS traffic?
Easy332A company recently deployed a Palo Alto Networks PA-220 firewall to secure outbound web access. The security policies include a rule named 'Allow-Web' with the following configuration: source zone 'Inside', destination zone 'Outside', application 'web-browsing', service 'application-default', action 'allow'. All other traffic is denied by a default deny rule. Users report that they can access most public websites, but they cannot access a partner's website hosted at 203.0.113.50 on TCP port 8080. Connections to this site time out. DNS resolution for the hostname works correctly. The firewall logs show that traffic from internal users to 203.0.113.50:8080 is not matching any rule and is being denied by the default deny rule. Which action should the administrator take to resolve the issue while adhering to security best practices?
Easy333A network administrator adds a new security rule allowing HTTP from the Trust zone to the Untrust zone. After committing, traffic from the Trust zone to the Untrust zone is still blocked. What is the most likely cause?
Easy334Which TWO of the following are valid methods to collect a technical support file from a Palo Alto Networks firewall?
Medium335Which TWO are valid methods for authenticating administrative users on Palo Alto Networks firewalls? (Choose two.)
Medium336Which THREE of the following are valid features of Palo Alto Networks active/passive HA?
Hard337A user at 192.168.1.10 attempts to access a social networking site (application: social-networking). Based on the exhibit, what will the firewall do?
Easy338Based on the exhibit, what is the role of the rule "Allow_Outbound"?
Easy339Refer to the exhibit. An administrator configures decryption for HTTPS traffic from internal users. However, traffic using TLS 1.3 is not being decrypted. Which change should be made to decrypt TLS 1.3 traffic?
Hard340A security administrator is troubleshooting a site-to-site IPsec VPN between two Palo Alto Networks firewalls. The Phase 1 proposal includes AES-256, SHA-256, and DH Group 14 with a lifetime of 28800 seconds. The Phase 2 proposal includes AES-256, SHA-256, and PFS with DH Group 14. The tunnel is established and traffic is flowing, but intermittently the tunnel drops and re-establishes. The logs show the following error: 'Phase 2 negotiation failed because no suitable proposal found.' Both firewalls have IKE gateway and IPsec crypto profile configurations that match for encryption, authentication, and DH groups. Which option is the most likely cause of this issue?
Hard341Match each log type to its description.
Medium342A large enterprise with thousands of security rules wants to reduce rule count without compromising security visibility. The current rules use many specific applications and services. Which strategy should be implemented to consolidate rules effectively?
Hard343A company deploys a pair of firewalls in Active/Passive HA. To ensure that active sessions are preserved during failover, which interface must be configured for state synchronization?
Medium344Refer to the exhibit. A packet arrives with source IP 192.168.1.10, destination IP 203.0.113.10, destination port 80, from zone trust. After this NAT rule is applied, what will be the destination IP and port of the packet?
Hard345Refer to the exhibit. A security analyst reviews a traffic log entry in JSON format. Which firewall feature is responsible for including the 'user' field in the log?
Medium346Which three of the following are valid commit options in the PAN-OS GUI? (Choose three.)
Hard347An administrator is configuring active/passive HA for two PA-3020 firewalls. Which TWO conditions would trigger a failover? (Choose two.)
Hard348An organization has multiple virtual routers on a single firewall. Traffic between two virtual routers must be inspected by security policies. How should this be configured?
Medium349Refer to the exhibit. A user reports being unable to connect to a website over HTTPS. The traffic log shows the application as 'incomplete' and the rule 'Block-Unknown-App' is matched. What is the most likely reason the application is 'incomplete'?
Hard350A company wants to decrypt all SSL traffic from internal users to external websites. They have deployed a Palo Alto Networks firewall in forward proxy mode and installed a trusted root CA certificate on all endpoints. Users, however, are complaining about certificate errors when accessing HTTPS sites. Which configuration step is most likely missing?
Easy351Refer to the exhibit. An administrator wants to block all traffic that does not match a specific application (e.g., only allow 'web-browsing'). What should be done?
Hard352A company is expanding its network and needs to add a new data center. The two data centers will be connected via a WAN link. To protect the traffic between data centers, the security team wants to use site-to-site VPNs. Which Palo Alto Networks feature is used to route traffic between VPN tunnels and security zones?
Medium353An administrator wants to configure the firewall to automatically synchronize its clock with an external NTP server. Which device management section is used?
Easy354An administrator needs to allow traffic from multiple subnets to a specific internal server. The subnets are all part of the same address group. Which object would simplify the security policy rule?
Medium355A large enterprise uses Palo Alto Networks firewalls with SSL Forward Proxy to inspect all HTTPS traffic (port 443) from internal users. Recently, users have reported slow web browsing and intermittent failures when accessing certain financial and healthcare websites. The firewall's dataplane CPU consistently reaches 85-95% during business hours. The decryption policy is configured with a single rule that decrypts all outbound HTTPS traffic using the default SSL Forward Proxy settings. The firewall is a PA-5250 with ample license capacity. What should the administrator do to resolve the performance issues while maintaining security posture?
Hard356An administrator needs to back up the firewall configuration before making changes. Which method creates a complete backup that can be restored to the same or a different firewall?
Easy357Refer to the exhibit. A user at 10.0.0.5 is accessing https://internal-server (192.168.1.50:443). The administrator wants to decrypt this traffic but notices it is not being decrypted. What is the most likely reason?
Medium358A small business has a Palo Alto Networks firewall with a single security policy rule that allows all traffic from the 'Trust' zone to the 'Untrust' zone. The business recently experienced a malware infection originating from an internal host that communicated with known malicious IP addresses. The administrator wants to implement a security policy to block traffic to these malicious IP destinations. The administrator has a list of 500 malicious IP addresses that may change frequently. What is the most efficient way to create a policy to block traffic to these IPs?
Easy359A company has a Palo Alto firewall with both inbound and outbound decryption. The security team notices that some traffic to a specific internal server is being double-decrypted: first by inbound decryption when the client is internal, and second by outbound decryption when the server initiates connections to external resources. This causes performance issues and certificate warnings. The firewall policy has separate rules for inbound and outbound decryption, and all internal traffic passes through the firewall. How should the administrator resolve this?
Hard360Which TWO factors affect the order in which security rules are evaluated?
Hard361A firewall administrator needs to generate a report that shows the top applications consuming bandwidth over the last week. Which Palo Alto Networks tool should be used?
Medium362During a security audit, it is discovered that FTP traffic over non-standard ports is bypassing App-ID inspection. What is the most effective method to ensure all FTP traffic is identified, regardless of port?
Hard363A firewall administrator notices that a security rule intended to block traffic from a specific IP address is not working. The rule is placed at the bottom of the security rulebase, and the traffic is being allowed by a rule higher in the list. What is the most likely cause?
Easy364After a policy change, a security administrator commits the candidate configuration, but the changes do not take effect immediately for all users. Some users report connectivity issues while others do not. What should the administrator check first?
Hard365A company wants to block all traffic from the Guest zone to the Corporate zone except DNS. What is the best practice for configuring the security policy?
Medium366Based on the exhibit, what action did the firewall take on this traffic?
Easy367A security engineer needs to ensure that all traffic from the internal network to the internet is inspected by the firewall. The firewall is deployed in virtual wire mode (Layer 2) with subinterfaces. Which configuration is required to achieve this?
Easy368An organization uses a Palo Alto Networks firewall to segment its network into three zones: Corp (10.0.1.0/24), Guest (10.0.2.0/24), and Mgmt (10.0.3.0/24). The firewall is running PAN-OS 10.0. The administrator wants to ensure that only devices from the Corp zone can access the management interface of the firewall via SSH from the internal network. The management interface is physically connected to the Mgmt network, and its IP is 10.0.3.1/24. A security policy must be configured to permit this access. Which approach should the administrator take?
Medium369A small business uses a Palo Alto Networks PA-220 firewall. The administrator needs to create a security policy to allow inbound VPN connections from remote employees using IPsec. The remote employees connect using dynamic IP addresses. The administrator creates an address object "Remote-VPN-Users" of type "IP Range" but that doesn't work because the IPs are not known. What address object type should be used instead?
Easy370Two Palo Alto Networks firewalls are configured in an active/passive high-availability pair. During a failover event, the passive firewall becomes active but the session table is empty. What is the most likely cause?
Hard371An administrator wants to view logs related to decryption failures. Which log type should they use?
Easy372Which three of the following are true about tag-based dynamic address groups? (Choose three.)
Medium373An administrator wants to block traffic from a specific user using User-ID. What is required to identify users in security policies?
Easy374Refer to the exhibit. Based on the session information, which type of NAT is being performed?
Medium375Which TWO are required to configure a Forward Proxy Decryption rule?
Easy376An administrator needs to apply a security profile that includes anti-malware and vulnerability protection to all traffic from the internal network to the internet. However, there is already a rule that allows this traffic without any profiles. What is the most efficient way to apply the profiles?
Medium377A security administrator manages a Palo Alto Networks firewall with multiple virtual systems (vsys). The firewall is configured to use Panorama for centralized management. The administrator notices that after committing a configuration change on Panorama, the firewall's vsys2 is not receiving the updated configuration. The firewall can reach Panorama, and other vsys are updated correctly. The administrator verifies that Panorama's device group hierarchy includes the firewall and that the vsys2 template stack is correctly assigned. What is the most likely cause of this issue?
Medium378A security administrator is configuring Panorama to manage multiple firewalls. Which two actions are required to ensure that a firewall receives its configuration from Panorama? (Choose two.)
Medium379Which THREE actions can a Security policy rule perform on traffic?
Hard380A company uses Palo Alto Networks firewall and wants to configure NAT to allow internal users to access the internet using a public IP address pool. Which NAT type should be used?
Medium381Refer to the exhibit. An administrator notices a large number of decryption sessions. What is a valid conclusion based on the output?
Hard382An administrator needs to perform a scheduled reboot of the firewall for maintenance. Which method provides the most control over the reboot timing?
Easy383Which THREE actions are valid when configuring App-ID in a security policy? (Choose three.)
Hard384A global company uses a Palo Alto Networks firewall at its headquarters. They have a security policy that allows 'web-browsing' and 'ssl' for all users. Recently, they deployed a new custom web application for internal use that runs on TCP port 8443 with SSL. The application is not identified by App-ID as 'web-browsing' or 'ssl', but as 'unknown-tcp'. The security team wants to ensure that only this specific application is allowed, and all other unknown traffic is blocked. They have created a custom App-ID for the application using application override. However, after applying the override, the traffic is still shown as 'unknown-tcp' in logs. What is the most likely reason?
Hard385An administrator runs the command and sees the above output. What is the most likely cause of the large number of handshake failures?
Medium386Drag and drop the steps to configure a GlobalProtect portal and gateway on a Palo Alto Networks firewall into the correct order.
Medium387An administrator needs to block all traffic from a specific IP address on the external interface. What is the simplest method?
Easy388An organization uses inbound inspection decryption for their public-facing web servers. They have imported the server's certificate and private key into the firewall. However, some clients report 'untrusted certificate' warnings. What is the most likely cause?
Hard389An administrator configures a security policy rule to block traffic from IP address 10.1.1.1 to 10.2.2.2 on any service. However, traffic from 10.1.1.1 to 10.2.2.2 is still passing through the firewall. After checking all rules, what is the most likely cause?
Medium390Refer to the exhibit. A user from 10.0.0.10 attempts to access an HTTP website hosted on 203.0.113.5 using TCP port 8080. The connection fails. The firewall logs show no session for this traffic. What is the most likely cause?
Hard391Which TWO are best practices for securing management access to a Palo Alto firewall? (Select two)
Easy392A security team is deploying a Palo Alto Networks firewall in an AWS VPC using the VM-Series. They need to ensure that traffic between two subnets within the same VPC is inspected by the firewall. What is the required network configuration?
Medium393An administrator makes several changes to the firewall configuration and commits. However, after the commit, users report connectivity issues. The administrator wants to revert to the previous configuration quickly without losing the changes that were made earlier in the day but not yet committed. What should the administrator do?
Hard394Refer to the exhibit. What is the default gateway of the firewall?
Hard395An organization has deployed Palo Alto Networks firewalls in a multi-tenant environment. Each tenant has its own set of address objects and address groups. The firewall administrator wants to ensure that address objects from one tenant cannot be used in security policies of another tenant. What is the best practice to achieve this?
Hard396An organization is deploying a Palo Alto Networks firewall in a data center with multiple virtual routers. The network team wants to ensure that traffic between two different virtual routers can be inspected by the firewall. Which configuration is required?
Hard397A network administrator wants to ensure that if the primary firewall fails, a secondary firewall takes over without any manual intervention. Which high availability feature is essential for this automatic failover?
Easy398A network administrator notices that traffic from a specific subnet is being denied even though there is a permit rule that matches the source and destination. The rulebase has over 500 rules. What is the most likely cause?
Medium399A security policy rule has an action of "allow". Which TWO objects are mandatory for the rule to be valid? (Choose two.)
Hard400A security engineer is creating a security policy that should allow access to Salesforce.com for the sales team. The engineer configures the policy to allow application 'ssl' with no restriction on URL category. How can the engineer ensure that only traffic to Salesforce.com is allowed and not all SSL traffic?
Medium401Which of the following is NOT a valid method for upgrading PAN-OS software on a Palo Alto firewall?
Easy402Refer to the exhibit. A firewall has learned three routes for the 10.0.1.0/24 network. Which route will be used for forwarding traffic destined to 10.0.1.1?
Medium403A small company runs a Palo Alto Networks PA-220 firewall with three zones: trust (internal users), untrust (internet), and dmz (public-facing services). They host a web server on IP 10.0.1.10 in the dmz zone, serving HTTPS content. The administrator created a security policy rule that allows traffic from untrust to dmz with source 'any', destination 10.0.1.10, service HTTPS, and action allow. No security profiles are applied to this rule. Users outside the company can access the web server successfully. However, the administrator notices from log reports that certain application-based attacks, such as SQL injection and cross-site scripting, are reaching the web server undetected. The firewall has the required threat prevention licenses installed. What is the best course of action to improve security posture?
Easy404A network administrator is troubleshooting a connectivity issue. The firewall has a security rule that allows traffic from the Trust zone to the Untrust zone for the subnet 192.168.1.0/24 with application 'web-browsing'. However, users in that subnet cannot access any external websites. The administrator checks the logs and sees that the traffic is being blocked by a rule named 'Deny All' that is listed before the allow rule in the policy order. What is the most likely cause of the problem? The rule order is incorrect; the allow rule is below the 'Deny All' rule. The source address object for the allow rule is misconfigured with a wrong subnet mask. The application 'web-browsing' is not being properly identified by App-ID. The User-ID agent is overriding the allow rule and triggering a block action.
Easy405A network engineer is troubleshooting a drop in traffic from a critical application. The traffic is allowed by the security policy, but the firewall is dropping the packets. The engineer views the session log and sees that the session is being terminated due to 'tcp-non-syn'. What is the most likely cause?
Medium406A security engineer must ensure that all traffic from a specific branch office to the internet is inspected by the company's Palo Alto firewall before reaching the internet. However, the branch office has a local router that routes directly to the ISP. What architectural change is required to enforce this?
Hard407A firewall administrator needs to allow traffic based on the application, not just port. Which type of object should be used in the security policy?
Hard408Two Palo Alto Networks firewalls are deployed in an active/passive high availability pair. The passive firewall does not synchronize configuration changes. What is the most likely cause?
Easy409An administrator wants to configure SNMP traps to send critical events from a firewall to a receiver at 192.168.1.100. Which TWO configuration objects must be created? (Choose two.)
Easy410An administrator configured NTP servers as shown. After committing, the firewall's time is not synchronized. Which additional configuration is required?
Easy411A company requires automatic daily backups of the firewall configuration. Which method should be used?
Medium412Which TWO of the following are valid log types on a Palo Alto Networks firewall?
Easy413Refer to the exhibit. The firewall cannot reach the Internet. Based on the routing table, what is the most likely cause?
Hard414A network administrator needs to configure certificate-based authentication for administrative access to the firewall's web interface. Which two actions are required?
Easy415An administrator creates a dynamic address group named 'prod-servers' configured to match any tag with the value 'production'. After tagging address objects with 'Production' (capital P), the group does not include them. What is the most likely cause?
Medium416A security team notices that custom application 'myapp' is not being identified by App-ID even though the correct application override is in place. What should they verify first?
Hard417A security administrator notices that a user's traffic is being blocked unexpectedly. The user's IP is 10.1.1.100, and the traffic is destined to a web server at 192.168.2.10. The administrator has already verified that there are no security rules explicitly denying the traffic. Which Log Viewer query should the administrator use to quickly identify the cause?
Medium418Refer to the exhibit. A firewall administrator is reviewing a Panorama template configuration. What is the purpose of the 'profile' statement under the interface?
Easy419Which TWO of the following are methods to identify users for User-ID? (Choose two.)
Medium420Refer to the exhibit. An administrator observes that HTTP requests from the 10.0.0.0/24 network to the 172.16.1.0/24 network are being logged but the logs show that the action taken is 'deny'. What is the most likely cause?
Hard421Match each security rule type to its purpose.
Medium422A company is migrating from a legacy firewall to a Palo Alto Networks firewall. The legacy policy has many rules with overlapping source and destination objects. Which feature should the administrator use to simplify the policy before migration?
Medium423A firewall is configured with multiple security zones. Traffic from the 'Untrust' zone to the 'DMZ' zone is allowed for web services. The administrator wants to ensure that the DMZ servers cannot initiate connections to the Untrust zone. What is the correct approach?
Easy424A company uses Palo Alto Networks firewalls and wants to decrypt inbound traffic to their web server. Which decryption type should be configured?
Medium425Refer to the exhibit. A user reports that they receive a certificate warning when accessing https://example.com. The firewall is configured to decrypt SSL traffic. What is the most likely cause?
Hard426An organization deploys VM-Series firewalls in a public cloud. They need to ensure consistent security policy management across multiple cloud accounts. Which architecture best addresses this requirement?
Hard427An administrator needs to create a rule that allows internal users to access a public web server hosted in the DMZ. The firewall is in layer 3 mode. Which rule configuration is correct for this scenario?
Medium428An administrator configures a custom App-ID signature using a packet buffer override. What is the implication?
Hard429Drag and drop the steps to configure a security policy on a Palo Alto Networks firewall into the correct order.
Medium430Refer to the exhibit. What is the PAN-OS version running on the firewall?
Medium431An administrator configures log forwarding to send traffic logs to a syslog server. After applying the log forwarding profile to the security policy, logs are not appearing at the syslog server. The administrator verifies that the syslog server is reachable from the firewall's management IP by using ping, and that the syslog service is running on the server. What is the most likely cause?
Easy432Drag and drop the steps to configure a User-ID agent on a Palo Alto Networks firewall into the correct order.
Medium433Which THREE are valid object types in Palo Alto Networks NGFW? (Choose three.)
Medium434An organization implements SSL Forward Proxy to decrypt outbound HTTPS traffic, with a security rule that includes Vulnerability Protection and Anti-Malware profiles. Despite this, certain malware downloaded over HTTPS is not being blocked. The administrator observes that the traffic is decrypted and matches the security rule. The decryption policy excludes decryption for financial services category. The malware is delivered from a known malicious domain that is not in the financial services category. The analysis shows that the malware uses a custom packer that is not recognized by the current Anti-Malware signatures. What is the most likely reason the malware bypasses detection? The decryption exclusion list includes the domain of the malware source. The Anti-Malware profile is set to 'default' which may not block unknown malware effectively. The firewall is missing the latest content updates for WildFire. The security rule uses application 'ssl' but not 'web-browsing' for the traffic.
Hard435A network administrator is configuring a new Palo Alto Networks firewall for the first time. Which THREE initial configuration steps are required to allow basic outbound internet access from the internal network?
Easy436Refer to the exhibit. An administrator is analyzing the rulebase. Traffic from source 10.1.1.5 to destination 8.8.8.8 using web-browsing application (HTTP TCP/80). Which rule will match?
Medium437Which TWO of the following are valid dataplane components in a Palo Alto Networks firewall?
Medium438A security administrator needs to create address objects for a group of servers that share the same subnet 192.168.10.0/24. Which TWO methods can be used to efficiently manage these objects in Palo Alto Networks firewall configuration?
Medium439A network engineer needs to ensure that all traffic from the 'Guest' zone to the 'Internet' zone is inspected for malware, but also wants to allow high-bandwidth video conferencing traffic to bypass threat inspection for performance reasons. Which approach best achieves this?
Hard440An administrator wants to protect the firewall management interface from unauthorized access. The management interface is on a separate management network. Which of the following is the best security practice to restrict access?
Hard441A security administrator wants to block traffic from a specific country using the firewall. How can this be achieved with minimal administrative overhead?
Easy442A network administrator notices that traffic from the internal network to a specific external server is being blocked unexpectedly. The firewall policy allows any-to-any outbound traffic. The administrator checks the Unified Policy and sees a Security policy rule that permits the traffic, but the traffic is still blocked. What is the most likely cause?
Medium443Your organization has deployed a Palo Alto Networks PA-5250 firewall in a high-availability active/passive configuration. The firewall is connected to two ISPs for redundancy. The internal network uses OSPF with the firewall as an ASBR redistributing a default route. Recently, users reported intermittent connectivity to external resources. During troubleshooting, you notice that the active firewall's management interface has high CPU usage, and the show session all command displays many sessions in the 'active' state but with minimal data transfer. The passive firewall shows no such issues. The OSPF neighbor relationships are stable. What is the most likely cause of the intermittent connectivity?
Hard444After a new zero-day exploit is discovered, a firewall must receive the latest threat prevention signature immediately. What is the most effective method to ensure the firewall gets the update as soon as it is released?
Medium445After enabling SSL decryption, users report that some websites fail to load. The firewall logs show 'decryption error' for these sites. Which decryption profile setting should the administrator check first?
Medium446A company wants to block all traffic from the application 'facebook-base' but allow 'facebook-chat'. Which type of security rule is most appropriate?
Easy447A security analyst notices that a legitimate application is being incorrectly identified as a different application by the firewall. What is the best first step to resolve this issue?
Medium448Which three of the following are valid types of address objects in Palo Alto Networks? (Choose three.)
Medium449A company is implementing SSL Decryption with a forward proxy for outbound traffic. They want to ensure that traffic to sensitive sites like banking is not decrypted. What is the correct configuration?
Hard450A company has a firewall configured with multiple virtual routers. A user on a trusted network can ping the firewall's management IP but cannot reach an external server. The security policy allows the traffic. What is the most likely cause?
Hard451A network administrator wants to allow HTTP and HTTPS traffic from untrust zone to DMZ zone for a web server, but block all other traffic. What is the most efficient way to achieve this with a single rule?
Easy452An administrator notices that the firewall's time is incorrect. Based on the exhibit, what is the most likely cause?
Medium453A network engineer is configuring a new PA-220 firewall in a small branch office. The firewall must be managed centrally from Panorama. What is the first step after physically installing the firewall?
Medium454Which THREE actions can be performed in a decryption policy? (Choose three.)
Medium455A company has two Palo Alto Networks firewalls in an active/passive HA pair (PA-5250) running PAN-OS 10.1. The HA configuration uses dedicated HA1 (control link) and HA2 (data link) interfaces. The network team recently replaced a failed switch that connected the HA1 interfaces. After the switch replacement, the HA pair is not forming. The administrator logs into the active firewall and runs 'show high-availability state' which shows the local state as 'active' and the peer state as 'unknown'. The HA1 interface status shows 'link down'. The administrator checks the physical connections and confirms the cables are connected and the switch ports are up. What is the most likely cause and the best course of action?
Hard456A company with a Palo Alto Networks firewall operating in Layer 2 transparent mode wants to control access to an internal ERP system. The ERP system uses a non-standard TCP port 4444. The security administrator creates a custom application object named 'ERP' with protocol set to 'tcp' and port range 4444-4444. Then, a security policy is configured allowing application 'ERP' from the internal zone to the ERP server zone. Users report they cannot connect to the ERP system. Firewall logs show no traffic matching the application 'ERP'. What should the administrator do to resolve the issue?
Easy457Which THREE factors should be considered when deciding which traffic to decrypt? (Select exactly three.)
Medium458Which TWO of the following are required to configure a site-to-site VPN using IKEv2 on Palo Alto Networks firewalls? (Choose TWO.)
Easy459A company has a Palo Alto Networks firewall in a data center, connecting internal users (zone: Internal) to the internet (zone: Untrust). Recently, users report that they cannot access the corporate HR portal hosted on a server in the DMZ (zone: DMZ, IP 10.10.10.10) using HTTPS. The firewall has a security policy that allows traffic from Internal to DMZ with application web-browsing and service https-ssl. The policy is in place and committed. The administrator verifies that the web server is running and reachable from within the DMZ. From the firewall, a ping from the management interface to the server is successful. However, when a user tries to access https://10.10.10.10, the connection times out. Traffic logs show no sessions logged for that traffic. What is the most likely cause?
Hard460Traffic between two internal zones is being dropped due to a security policy rule that blocks any traffic. However, the administrator needs to allow specific inter-zone traffic for a critical application. The allowed traffic is sourced from a special IP range. How should the administrator configure the security policy to permit only this traffic while still blocking other traffic?
Hard461Refer to the exhibit. An admin reviews the traffic log and sees that traffic from 192.168.1.100 to 10.0.0.50 is allowed by rule 'rule1'. The rule uses a service group 'web-services' which includes 'service-http' and 'service-https'. However, the admin intended to block HTTPS traffic. What is the misconfiguration?
Easy462For a firewall to communicate with Panorama for centralized management, which requirement must be met?
Easy463Which TWO of the following are true about App-ID? (Choose two.)
Medium464Refer to the exhibit. An administrator runs 'show system resources' on a PA-500 firewall experiencing performance issues. Based on the output, what is the most likely cause?
Hard465A company runs a pair of PA-5250 firewalls in active/passive HA controlling the production data center (10 Gbps traffic). The security team needs to upgrade from PAN-OS 10.0 to 10.2 to fix several critical CVEs. The team has a maintenance window of four hours. The lead engineer suggests performing the upgrade in the following order: 1. Download and install the upgrade on the passive firewall, 2. Commit after install, 3. Perform a non-disruptive failover to make the passive active, 4. Upgrade the new passive (former active), 5. Fail back to the original active. A junior engineer points out that the passive firewall takes 30 minutes to boot and join the HA pair after upgrade. The maintenance window is only four hours. What should the team do to ensure the upgrade completes within the window?
Easy466During a firewall upgrade from PAN-OS 9.1 to 10.0, the administrator receives an error that the upgrade cannot proceed because there is a pending commit. The administrator checks the commit status and sees that a commit was initiated but has not completed. What is the best course of action?
Hard467A medium-sized enterprise has a Palo Alto Networks firewall in your data center. They have recently deployed a new cloud-based CRM system that uses a proprietary protocol over TCP port 8443. The firewall is configured with App-ID enabled, but traffic to the CRM is being incorrectly identified as 'web-browsing' and 'ssl'. Users are able to access the CRM, but the security team wants to ensure that only authorized users can use this application. They have created a custom App-ID signature based on a unique payload pattern in the first packet. However, after applying the signature and committing, the traffic logs still show the application as 'incomplete' or 'web-browsing'. The firewall is running PAN-OS 10.1. What is the most likely reason the custom App-ID is not working?
Medium468Match each Palo Alto Networks feature to its category.
Medium469A network administrator observes that a user is able to access a cloud storage application even though a security rule explicitly blocks that application. Other application blocks work correctly. What is the most likely cause?
Medium470Which THREE are required for Panorama to manage a firewall? (Select three)
Hard471An administrator is troubleshooting why a policy is not being matched. Which THREE of the following are valid reasons a security rule might not be hit? (Choose three.)
Hard472A company purchases a new PA-410 firewall and installs it in a branch office. After configuring basic network settings, the administrator attempts to install the threat prevention license. The firewall is connected to the internet via a NAT device. The administrator registers the firewall with the Palo Alto Networks support portal using the serial number. The license is successfully added to the account. However, when checking the firewall's license status via the web interface, it shows 'Authentication Failed' for the license. The administrator can ping a well-known DNS server from the firewall's management IP. What is the most likely cause?
Hard473Match each PAN-OS CLI command to its function.
Medium474A security administrator configures log forwarding to send threat logs to a central SIEM. The administrator creates a log forwarding profile that includes 'threat' and 'traffic' log types, and applies the profile to several security rules. After verifying, the SIEM receives logs for allowed traffic, but does not receive any logs for denied traffic. The administrator confirms that the deny rules also have the same log forwarding profile applied. What is the most likely cause of the missing denied traffic logs? The log forwarding profile is not configured to forward logs for denied sessions. The SIEM is not configured to receive syslog messages for deny actions. The firewall is logging only at session end and the deny sessions are not completing. The log forwarding profile only includes 'traffic' logs and not 'threat' logs.
Medium475Which license is required for the firewall to use URL filtering?
Easy476An administrator needs to deploy a Palo Alto Networks firewall in a location where the network infrastructure does not support routing. The firewall must be transparent to the existing network. Which deployment mode should be used?
Easy477A network administrator is configuring a new PA-220 firewall. The management interface (MGT) must be accessible from the internal network for GUI access. Which IP address should be assigned to the MGT interface?
Medium478A user at IP 10.0.0.10 is accessing a server at 192.168.1.5. According to the decryption policy, what will happen to the traffic?
Hard479Match each PAN-OS component to its role.
Medium480A company uses destination NAT to translate a public IP to an internal server. They need to ensure that traffic sourced from the internal network to the public IP is also translated correctly. What is the best practice to achieve this?
Easy481What is the primary benefit of using Content-ID in a security policy?
Easy482A company has multiple branch offices connected via IPsec tunnels to a central datacenter. The central datacenter has a PA-5250 running PAN-OS 10.1. The security team wants to enforce that traffic between branches is inspected by the central firewall, not directly between branches. They configure security policies to allow inter-branch traffic through the central firewall. However, they notice that traffic between two branches (Branch A and Branch B) is not traversing the central firewall and is instead going directly between the branches via the IPsec tunnels which are configured as route-based VPNs. The security team has verified that the security policies are correctly configured to require the traffic to go through the central datacenter. What is the most likely cause?
Hard483Refer to the exhibit. A firewall log shows a decryption failure for a session. What is the most probable cause?
Medium484Which of the following is a best practice when configuring an HA (High Availability) pair of Palo Alto Networks firewalls?
Easy485Refer to the exhibit. A user at 10.1.1.50 is unable to connect to 192.168.1.100 on TCP port 443. The traffic log shows no entries for that source IP. Which security rule is expected to match this traffic?
Hard486Which THREE factors should be considered when troubleshooting a 'deny' rule that is unexpectedly blocking traffic? (Choose three.)
Hard487Refer to the exhibit. What is the effect of this configuration?
Easy488Which TWO actions are recommended for monitoring decrypted traffic on a Palo Alto Networks firewall?
Easy489A company has a Palo Alto Networks firewall with multiple virtual routers. The security policy has a rule that allows SSH from the 'Internal' zone to the 'DMZ' zone. Recently, a new subnet 10.10.20.0/24 was added to the Internal zone. Users in that subnet report they cannot SSH to a server at 192.168.1.10 in the DMZ, while users from other subnets in Internal can. The rule has source address object '10.0.0.0/8' which includes the new subnet. The rule's source zone is Internal, destination zone is DMZ, and application is SSH. The administrator confirms the new subnet's IPs are within 10.0.0.0/8. What is the most likely cause of the problem?
Hard490A workstation at 10.0.0.5 sends traffic to destination 8.8.8.8. Which NAT rule will be applied?
Easy491A mid-sized enterprise has deployed a Palo Alto Networks firewall with SSL Forward Proxy decryption for outbound traffic. The firewall uses a CA-signed certificate from a public CA, and the certificate is installed on all corporate-managed endpoints. Recently, the security team noticed that a few users are unable to access a specific external SaaS application (app.example.com) over HTTPS. Other users can access it without issues. The firewall logs show that for these users, the session is being decrypted and no threat is detected. The application uses a valid certificate from a public CA. The affected users are in the same IP subnet and use the same browser version. Which is the most likely cause?
Hard492A medium-sized enterprise recently deployed a pair of PA-5250 firewalls in an active/passive high-availability configuration. The network team notices that after a failover event, the new active firewall does not pass any traffic for about 30 seconds, even though the session table is synchronized. Users report that existing connections break and need to be re-established. The firewall is configured to use session state synchronization and failover triggers based on link state and ping to the next-hop gateway. Which action should the administrator take to minimize traffic disruption during failover?
Medium493Drag and drop the steps to perform a factory reset on a Palo Alto Networks firewall into the correct order.
Medium494An administrator sees this log repeatedly. Which configuration change will allow 10.0.0.1 to access the management interface?
Hard495An administrator wants to block upload of files with extension .exe to the application 'box-net'. Which security policy component is most appropriate?
Medium496An organization uses an External Dynamic List (EDL) to block IP addresses. The EDL is updated every 5 minutes on the server, but the firewall still uses the old list even after the refresh interval. What is the most likely cause?
Hard497Drag and drop the steps to configure a NAT policy on a Palo Alto Networks firewall into the correct order.
Medium498Based on the log excerpt, which object is used for the destination address?
Medium499Refer to the exhibit. An internal DNS server in the trust zone communicates with an external DNS server in the untrust zone. Which rule will match the DNS traffic?
Easy500A firewall administrator wants to ensure that all traffic from the inside zone to the outside zone is inspected for threats, but without causing a bottleneck. Which profile group should be applied to the security rule?
Easy501What is the most likely reason the traffic is being denied?
Medium502Based on the exhibit, what is the most likely cause if the firewall is dropping new connections but existing sessions continue to work?
Medium503Drag and drop the steps to configure a VLAN interface on a Palo Alto Networks firewall into the correct order.
Medium504A company needs to deploy a firewall for a branch office with 50 users. Which Palo Alto Networks platform is most appropriate for this requirement?
Easy505Which of the following is a prerequisite for App-ID to identify applications in encrypted traffic?
Medium506Refer to the exhibit. Which profile group is applied to this security rule?
Easy507A company is using Security Profiles (Antivirus, Anti-Spyware, Vulnerability Protection) in their security policies. Malware is still getting through. What is a common misconfiguration that could cause this?
Medium508A Palo Alto firewall administrator wants to monitor SSL decryption efficiency. Which log type provides the most detailed information about decryption actions and reasons for not decrypting?
Easy509A security policy allows traffic from zone 'Trust' to zone 'Untrust' for HTTP and HTTPS. The administrator notices that the traffic is being processed by the firewall but no session is created in the session table for the first packet of a new connection. What is the most likely reason?
Hard510A small business owner wants to block all social media applications during work hours for employees. The firewall is configured with App-ID and has a security rule that denies the 'social-networking' application category from the internal zone to the internet zone. However, employees are still able to access Facebook and Twitter. The traffic logs show these applications are being allowed by a different rule. The administrator checks the security policy and finds the deny rule for social-networking is present but not matched. What is the most likely reason the deny rule is not being matched?
Easy511An administrator has configured multiple security rules for a data center. There is a rule that allows SSH from the 'Management' zone to the 'Server' zone. Recently, the administrator added a new rule allowing SSH from a new 'Admin' zone to the 'Server' zone. The Admin rule is placed above the Management rule. Both rules specify the correct zones, application SSH, and action allow. After committing, SSH traffic from the Admin zone is being denied. What is the most likely issue?
Medium512A security engineer is configuring a Palo Alto Networks firewall to protect a web server. The engineer wants to ensure that only HTTP and HTTPS traffic is allowed to the server, and that the traffic is inspected for threats. Which TWO actions should the engineer take?
Hard513A company has a decryption policy that decrypts all traffic except for traffic to financial sites. However, users report that some financial sites are still being decrypted. What should the admin check first?
Medium514A company has a PA-5250 firewall in an active/passive HA pair. During a maintenance window, the administrator upgrades the passive firewall from PAN-OS 10.0 to 10.1. After the upgrade, the passive firewall fails to synchronize with the active firewall. The active firewall remains at 10.0. What is the most likely cause?
Hard515A university uses a Palo Alto firewall for outbound SSL decryption. The IT helpdesk receives complaints that students cannot access certain educational resource websites (e.g., online libraries, research databases) after decryption was enabled. The firewall logs show 'decryption failure' for these sites with reason 'certificate validation failure'. The decryption profile is set to 'Block sessions with expired certificates' and 'Block sessions with untrusted issuers'. The helpdesk verifies that the root CA certificate is installed on all endpoints. The issue is intermittent and only affects a few sites. What should the administrator do?
Medium516A company is experiencing performance issues due to large amounts of encrypted traffic. They want to offload decryption to a dedicated appliance but still maintain visibility. Which feature should they configure on the Palo Alto Networks firewall?
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Frequently asked questions
- What does the troubleshooting domain cover on the PCNSA exam?
- troubleshooting questions test whether you can apply the concept in context, not just recognise a definition.
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- This page lists all 516 troubleshooting questions in the PCNSA question bank. The actual exam draws from this domain proportionally to its weighting in the official exam blueprint.
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- Start with a short focused session (10 questions) to identify gaps, then work through explanations. Repeat with a longer session once the weak areas feel solid.
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