CCNA Network Fundamentals Questions

An administrator wants to view active sessions matching a specific source IP address (192.168.1.50) using the firewall CLI. Which command is correct?

Which TWO interface types are available when configuring physical ports on a Palo Alto Networks firewall? (Choose two)

A security analyst is examining a packet capture (PCAP) and observes that the TCP window size is dropping to zero during a data transfer between a client and a server through the firewall. What does a zero window size typically indicate in a TCP transmission?

A network engineer configures OSPF on a Palo Alto Networks virtual router. Neighbors are stuck in the EXSTART/EXCHANGE state. What is the most likely cause of this issue?

A network security engineer observes that TCP sessions are being terminated prematurely during periods of inactivity. The default application timeout is not meeting the business requirement for a custom database application. Where should the engineer modify the session timeout for this specific application?

Which THREE of the following are valid routing protocols supported natively within a PAN-OS Virtual Router? (Choose three)

An administrator is troubleshooting asymmetric routing issues where packets arrive out of order or fail stateful checks. Which TWO features or settings in PAN-OS can assist in handling or mitigating asymmetric routing challenges? (Choose two)

An administrator is troubleshooting packet drops on a Palo Alto Networks firewall and wants to inspect dropped packets or hardware counters using CLI diagnostic tools. Which TWO commands can be used to review packet drop information? (Choose two)

A network administrator notices that asymmetric routing is occurring on a multi-path firewall deployment, causing valid TCP sessions to be dropped by the firewall. Which feature should the administrator enable to resolve this issue?

An administrator is troubleshooting a packet flow issue where traffic arriving on a Layer 3 interface is being dropped. The administrator runs the command 'show counter global filter packet-drop yes' and notices an increment in counters related to 'Discard due to zone mismatch'. What does this counter typically indicate?

A network engineer needs to configure a redundant path for outbound traffic using static routes with different metrics (administrative distances). If the primary route has a metric of 10, what metric should be assigned to the backup static route to ensure it is only used when the primary route fails?

An administrator is troubleshooting a complex routing issue where traffic is not taking the expected static route. Which TWO commands can the administrator use to inspect the routing table and test route lookup for a specific destination IP address? (Choose two)

An administrator configures a Virtual Wire (VWire) interface pair on a Palo Alto Networks firewall. Traffic passing between the two VWire interfaces is intermittently failing. Upon checking, the administrator realizes VLAN tags are being stripped or not matched properly. What setting should be checked in the VWire object configuration?

An engineer is configuring a new Layer 3 interface on a Palo Alto Networks firewall and needs to ensure that the interface responds to ICMP echo requests for diagnostic purposes. Where must the administrator enable this setting?

An administrator needs to configure a static route on a Palo Alto Networks firewall so that traffic destined for a remote subnet (192.168.10.0/24) reaches its next-hop router (10.0.0.1). Which menu path must the administrator navigate to configure this?

An administrator is configuring a new Layer 2 subinterface on a Palo Alto Networks firewall and needs to associate it with an existing VLAN ID. Where is the VLAN tag specified for a Layer 2 subinterface?

An administrator is analyzing firewall packet flow and session behavior. Which THREE criteria are evaluated by the Palo Alto Networks firewall to uniquely identify and create a session? (Choose three)

Which TWO protocols are commonly used for device management and administrative access on a Palo Alto Networks firewall management plane? (Choose two)

An administrator needs to configure static routing on a PAN-OS Virtual Router. Which THREE parameters are required when defining a static route entry? (Choose three)

An administrator is setting up a Site-to-Site IPsec VPN tunnel on a Palo Alto Networks firewall. The VPN tunnel comes up, but traffic from the local subnet cannot reach the remote subnet. Upon checking the IPsec SA status, the phase 2 security associations are active. What is the most likely cause of the traffic failure?

A network security analyst is troubleshooting intermittent packet drops on a high-speed trunk interface connected to a core switch. The interface is configured as Layer 3 with 1 Gbps speed and full duplex. The switch port is also set to 1 Gbps full duplex. However, FCS (Frame Check Sequence) errors are incrementing rapidly. What is the most probable cause?

An administrator is troubleshooting a connectivity issue between a host and a server across a Palo Alto Networks firewall. The administrator needs to verify whether the firewall is dropping the packets due to a security rule denial. Which CLI command should the administrator use to monitor packet drops in real time?

A network engineer configures Equal-Cost Multi-Path (ECMP) routing on a Palo Alto Networks virtual router with two paths to the same destination. By default, how does PAN-OS select which path to use for a given session?

An administrator needs to test DNS resolution from the Palo Alto Networks firewall command line interface (CLI) to ensure the management plane can reach external name servers. Which command should be used?

An administrator configures Dynamic NAT on a Palo Alto Networks firewall using a pool of public IP addresses. After implementation, some internal clients intermittently fail to establish outbound connections. Upon reviewing traffic logs, the administrator notes that the NAT translation pool has exhausted all available ports for a specific source IP. Which feature should be enabled or adjusted to prevent this port exhaustion?

An administrator is configuring a new Layer 3 interface on a Palo Alto Networks firewall. Which TWO parameters must be defined for the interface to function correctly in a routed network? (Choose two)

An administrator has configured BGP on a Palo Alto Networks virtual router, but the BGP peers are stuck in the 'Idle' state. What is the most likely configuration error causing this status?

An administrator is configuring OSPF on a Palo Alto Networks virtual router. Which THREE parameters must match between OSPF routers for an adjacency to form successfully? (Choose three)

An administrator needs to verify the MAC address associated with a specific IP address on the local network segment using the firewall CLI. Which command should be executed?

An administrator is troubleshooting a scenario where BGP routes learned from a peer are not being installed in the Virtual Router's routing table. Upon checking the BGP routing table ('show routing protocol bgp rib-in'), the routes are visible, but they are marked as not best. What is the most common reason for a learned BGP route not to be selected as the best path?

Which TWO methods are valid ways to access the Command Line Interface (CLI) of a Palo Alto Networks firewall? (Choose two)

An administrator is configuring NAT on a Palo Alto Networks firewall. Which THREE address types can be used as translation sources in a Source NAT rule? (Choose three)

An administrator notices that traffic between two internal subnets connected to the same Palo Alto Networks firewall is not being inspected by security policies. The interfaces for both subnets are configured as Layer 3. What is the most likely reason for this behavior?