F5-CTS-LTM · domain
scenario questions
Practise F5 Certified Technology Specialist: BIG-IP LTM scenario questions practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.
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Which action does an LTM perform when a health monitor fails for a pool member?
Medium2Which THREE conditions must be met for Connection Mirroring to function correctly between two BIG-IP devices in a high-availability pair?
Hard3What is the primary function of a OneConnect profile on a BIG-IP Virtual Server?
Medium4Refer to the exhibit. Why would an administrator enable 'map-to-ipv6' in a source-address persistence profile?
Medium5An LTM administrator needs to allow a specific external IP address to access a restricted management interface via a virtual server, while blocking all others. What is the most efficient way to implement this?
Medium6An administrator wants to use an iRule to log the 'Host' header of every incoming HTTP request. Which iRule event is most appropriate for this task?
Medium7Which component is responsible for executing iRules on the BIG-IP LTM system?
Hard8Which component of the BIG-IP LTM system is responsible for performing health checks on backend servers to determine if they are capable of accepting new connections?
Easy9Refer to the exhibit. What is the primary purpose of enabling 'insert-xforwarded-for' in the HTTP profile?
Medium10Which load balancing method is best suited for a pool where servers have significantly different processing capabilities and hardware specifications?
Medium11An LTM Specialist is troubleshooting an issue where client browsers are receiving errors when connecting via HTTPS. The virtual server is working fine for plain HTTP. Which THREE of the following could be the cause? (Choose three)
Hard12Which BIG-IP feature allows an administrator to modify the HTTP header of a request before it reaches the backend server?
Medium13An administrator needs to monitor the health of a web service that uses an unconventional port and requires a specific string to be returned in the response. Which monitor type should be used?
Easy14An administrator wants to ensure that a specific server in a pool receives more traffic than others due to its higher hardware capacity. Which load balancing method should be used?
Medium15Which statement best describes the difference between a 'Node' and a 'Pool Member' in the BIG-IP LTM configuration?
Medium16Refer to the exhibit. The virtual server is showing client-side traffic but no server-side traffic. What is the most likely reason?
Hard17When configuring a custom monitor, what happens if the 'Time Until Up' is set to 0?
Hard18An administrator wants to use an iRule to change the pool for an incoming request based on the URI. Which event should be used in the iRule?
Medium19An administrator needs to modify the HTTP response header to hide the server version for security reasons. Which tool is most appropriate?
Medium20Refer to the exhibit. The LTM Specialist discovers that the HTTPS monitor is failing. The server logs indicate that the requests are reaching the web server, but the server is returning a 400 Bad Request error. What is the most likely cause?
Medium21Which load balancing algorithm is best suited for a pool of servers where each server has different hardware specifications and processing capacities?
Easy22Refer to the exhibit. The web_pool is currently offline with zero active members. An LTM Specialist checks the backend servers and finds they are both responding to pings. What is the most likely reason for the pool being offline?
Hard23When using an iRule to select a pool, what happens if the iRule contains a logic error that results in no pool being selected?
Medium24Which profile type is used to optimize the delivery of HTTP traffic, such as enabling GZIP compression or caching?
Medium25What is the primary benefit of using SNAT (Source Network Address Translation) on a BIG-IP LTM system when communicating with backend pool members?
Medium26Which load balancing algorithm would be best suited for a pool of servers where the servers have significantly different hardware specifications and processing capabilities?
Medium27An administrator wants to ensure that all HTTP traffic is redirected to HTTPS. What is the most efficient way to perform this on a BIG-IP LTM?
Easy28Which component of the BIG-IP system is responsible for managing the connection table and performing packet-level forwarding decisions?
Medium29An LTM Specialist needs to ensure that client traffic is distributed evenly across four backend servers, but some servers are more powerful than others. Which load balancing method should be chosen?
Medium30What is the primary function of the LTM 'OneConnect' profile in an environment with high-volume short-lived connections?
Medium31Which BIG-IP feature allows an LTM Specialist to perform granular inspection and modification of HTTP traffic headers before they reach the backend server?
Easy32Refer to the exhibit. Why is the 'http' profile required in this virtual server configuration?
Hard33Which TWO of the following are valid methods to offload SSL processing from the backend servers to the BIG-IP system? (Choose two)
Medium34Refer to the exhibit. What is the effect of the 'mask' setting in this source address persistence profile?
Hard35Refer to the exhibit. The virtual server 'vs_secure_site' is showing as 'offline'. What is the most immediate step to take to restore service?
Hard36Refer to the exhibit. The pool members are marked down. A manual test shows that 'curl -v -H "Host: www.example.com" http://<member_ip>/health.php' returns 'OK'. What is the most likely issue?
Hard37An LTM Specialist needs to configure a virtual server to handle both HTTP and HTTPS traffic on the same IP address. Which THREE steps are required to implement this? (Select THREE)
Medium38What is the result of setting the 'OneConnect Transformation' feature to 'Enabled' in an HTTP profile?
Hard39Which profile type is required to inspect and modify HTTP headers on a BIG-IP LTM virtual server?
Easy40An LTM administrator needs to ensure that a pool member remains in the pool but stops receiving new connections while existing connections are allowed to finish. Which action should the administrator perform?
Medium41What is the result of applying a 'FastL4' profile to a virtual server?
Easy42Refer to the exhibit. An LTM Specialist wants to ensure that persistence is maintained even if a client switches between different virtual services that share the same pool members. Based on the configuration, will this work?
Hard43A client is experiencing intermittent connection resets when accessing a virtual server. The LTM Specialist observes that the backend servers are occasionally overwhelmed during traffic spikes. Which feature should be implemented to mitigate this impact on the backend servers?
Medium44Which THREE features are provided by the BIG-IP LTM that assist in optimizing application performance?
Hard45Which TWO of the following are primary benefits of using an iApp Template for BIG-IP deployment?
Medium46An administrator wants to optimize the performance of an HTTPS-based application. Which THREE configurations should they consider to reduce load on the backend servers?
Medium47An administrator is configuring a new virtual server and needs to ensure that it only accepts traffic on a specific VLAN. How should this be configured?
Medium48Which object acts as the primary configuration component that defines the destination IP address and service port for incoming client traffic?
Easy49Which profile type must be attached to a virtual server to allow the BIG-IP to perform Layer 7 application inspection and modification?
Easy50What is the primary function of the 'FastL4' profile in a BIG-IP LTM configuration?
Medium51Which monitoring method is most reliable for verifying that a web application is not just responding to TCP requests, but also returning correct application-layer data?
Easy52Refer to the exhibit. A user connects to Virtual Server A, which uses the 'my_source_persistence' profile. The user is then redirected to Virtual Server B. Given the configuration, will the persistence record be honored?
Hard53An LTM Specialist is troubleshooting a virtual server where health monitors are failing despite the backend servers responding to ICMP. The health monitor is configured for HTTPS. Which TWO items should the specialist verify to ensure the monitor accurately reflects service availability?
Hard54What is the primary benefit of using a 'OneConnect' profile in an HTTP virtual server?
Medium55Which component of the BIG-IP LTM architecture is primarily responsible for the initial processing and decision-making regarding whether a packet should be forwarded to a pool member?
Easy56An LTM Specialist configures a virtual server with a destination of 10.10.10.10:80 and a default pool containing three members. A client connects to 10.10.10.10:80 and the connection is load balanced to a pool member. The Specialist then changes the virtual server's destination port from 80 to 8080. What happens to the existing client connection?
Medium57What happens when a health monitor fails for a pool member?
Hard58Which object in the BIG-IP LTM configuration is responsible for mapping a virtual server's incoming traffic to a specific group of backend servers?
Easy59An LTM is configured with a 'OneConnect' profile. What is the primary purpose of this feature?
Medium60An administrator implements a pool monitor using an HTTP GET request to verify application health. The application returns an HTTP 200 OK status, but the HTML body contains an error string indicating database connectivity failure. How should the administrator configure the monitor to mark the pool member down when this error appears?
Hard61Which health monitor should be used to verify that a web application is not just responding to TCP connections, but is actually serving the correct content?
Medium62An administrator observes that the BIG-IP is not correctly load balancing traffic across all members of a pool. What is the most likely cause if the load balancing method is set to 'Least Connections'?
Medium63An LTM is configured with a OneConnect profile. What is the primary purpose of this feature in the context of HTTP connections?
Hard64An administrator needs to ensure that a pool member remains part of the load balancing rotation only if it responds to specific HTTP GET requests on port 80, rather than just TCP SYN. Which action should the administrator perform?
Medium65Which component is responsible for monitoring the availability of pool members in a BIG-IP environment?
Medium66Refer to the exhibit. The BIG-IP LTM is configured with a simple TCP monitor. Users report that while the BIG-IP shows the pool members as 'Up', they receive a '503 Service Unavailable' error when accessing the application. What is the most likely reason for this?
Hard67Which THREE actions are required to successfully implement SSL offloading on a BIG-IP virtual server?
Hard68An administrator wants to reduce the load on the backend servers by caching static content. Which BIG-IP feature should be configured?
Hard69Refer to the exhibit. Clients are reporting 'SSL Handshake Failure' errors. What is the most likely cause?
Hard70Which CLI command is used to view the real-time status of pool members and their current connection counts?
Easy71Refer to the exhibit. If a client connects to the BIG-IP and the persistence profile is applied, what happens when the session expires?
Hard72Why would an LTM Specialist choose to implement a SNAT Automap instead of a SNAT pool?
Medium73Which load balancing method is most appropriate for a pool where servers have significantly different hardware specifications and processing capabilities?
Medium74Which profile is essential to enable when you need to inspect or manipulate HTTP traffic, such as inserting X-Forwarded-For headers?
Medium75What is the primary function of a BIG-IP LTM monitor?
Easy76What is the primary function of the 'OneConnect' profile in a BIG-IP LTM configuration?
Medium77A company requires that traffic be load balanced based on server response time. The LTM must dynamically select the server that is currently responding the fastest. Which load balancing algorithm should be used?
Hard78You have a requirement to distribute traffic to pool members based on the total number of active connections each server is currently handling. Which load balancing method should be selected?
Medium79An administrator implements Priority Group Activation on a pool containing four web servers. Two servers are assigned priority 10, and two servers are assigned priority 5. The minimum active members parameter is set to 2. One priority 10 member fails. What is the precise traffic distribution behavior of the BIG-IP system?
Hard80An administrator wants to redirect all incoming HTTP traffic on port 80 to HTTPS on port 443. What is the most effective approach?
Hard81Which THREE criteria determine how a BIG-IP selects a pool member for a new client connection?
Medium82An administrator wants to use a single Virtual Server to handle both HTTP and HTTPS traffic for the same domain. What is the recommended way to achieve this?
Medium83An LTM administrator needs to ensure that client SSL traffic is offloaded at the BIG-IP while maintaining end-to-end encryption to the backend servers. Which profile configuration is required to achieve this?
Medium84A virtual server is configured with a OneConnect profile. What is the primary benefit of enabling OneConnect in this scenario?
Medium85Which component of the BIG-IP architecture is responsible for performing the actual load balancing of traffic to pool members?
Medium86When implementing SNAT Automap on a virtual server, what is the source IP address of the traffic as it arrives at the backend server?
Medium87Which component should an administrator monitor to identify if the BIG-IP is hitting its licensed throughput limit?
Easy88What is the primary function of a 'Clone Pool' in an LTM virtual server configuration?
Medium89What happens to the BIG-IP system when the failover trigger occurs in a high-availability pair?
Medium90An application requires persistence based on a specific custom header named 'X-Session-ID'. The LTM Specialist has confirmed the header is always present in requests. Which persistence method is most appropriate?
Hard91What is the primary function of the 'OneConnect' profile in a BIG-IP LTM environment?
Medium92An LTM administrator is configuring a new virtual server and needs to ensure that only specific source networks can access the application. Which TWO methods can be used to restrict access?
Hard93When deploying a BIG-IP LTM in a high-availability (HA) pair, what is the purpose of the 'Failover' cable or link?
Hard94Refer to the exhibit. The monitor is failing even though the page exists. What is the most likely cause?
Medium95A BIG-IP administrator creates a Standard Virtual Server with source address translation set to 'Automated Map'. During peak hours, clients behind a specific corporate NAT gateway experience intermittent connection drops. What is the mechanism and impact of 'Automated Map' in this scenario?
Hard96An administrator observes that the 'Least Connections' load balancing algorithm is not distributing traffic as evenly as expected. What is the most probable reason?
Medium97Which component of the BIG-IP LTM architecture is responsible for performing the actual load balancing decisions based on the configured algorithm?
Medium98Refer to the exhibit. The web server logs show the source IP is the BIG-IP Self IP. Why is this happening despite the X-Forwarded-For configuration?
Hard99Refer to the exhibit. An administrator wants to modify this configuration to support persistence for this application. Which command should be added to the virtual server configuration?
Hard100Refer to the exhibit. The administrator wants to use cookie persistence, but it is not working. What is missing from the configuration?
Hard101An administrator needs to perform a graceful shutdown of a server in a load-balanced pool without interrupting existing user sessions. Which action should be taken?
Easy102An administrator configures a standard Virtual Server with a destination IP of 10.10.10.20:443, using a SNAT Pool instead of Auto Map. During peak hours, connections begin to fail because the SNAT pool only contains a single IP address and port exhaustion occurs. Which architectural adjustment best resolves this issue while maintaining security?
Medium103Which command is used to view the current status and statistics of a pool from the command line?
Easy104A client is experiencing intermittent connection failures. You suspect the BIG-IP is SNATing traffic. If the SNAT pool is exhausted, what behavior will the BIG-IP exhibit?
Hard105An LTM administrator needs to ensure that only encrypted traffic is accepted by a Virtual Server. Which profile should be configured?
Easy106Refer to the exhibit. An administrator notices that users connecting to both port 80 and port 443 are being persisted to the same backend server. Why is this occurring?
Hard107When troubleshooting a persistent connection issue, which LTM feature allows you to view active persistence entries?
Medium108What is the primary risk of using a wildcard (0.0.0.0/0) virtual server on a BIG-IP system?
Hard109You are managing an LTM and notice that some traffic is not being load-balanced as expected. You see that an iRule is applied to the virtual server. What is the most likely reason the iRule is overriding the load-balancing method?
Medium110Refer to the exhibit. What happens to the user session if the 'my_app_cookie' is not present in the initial client request?
Hard111Refer to the exhibit. An administrator checks the status of 'web_pool' and observes the output shown. What is the most likely cause for the pool being offline?
Easy112Which health monitor type should be used when you need to verify that a web server is not only responding to TCP connections but also returning the correct content for a specific page?
Medium113An administrator needs to ensure that client SSL traffic is terminated at the BIG-IP LTM while maintaining persistence based on a specific session cookie. Which profile combination correctly enables this functionality?
Medium114An LTM Specialist is asked to prevent users from accessing a specific subdirectory on a website, e.g., '/admin'. What is the most secure and efficient way to do this?
Medium115A virtual server is configured with a 'Least Connections' load balancing method. Under what specific scenario would this method be more effective than 'Round Robin'?
Medium116Refer to the exhibit. What is the impact of using the 'tcp-lan-optimized' profile on this virtual server?
Hard117When configuring a BIG-IP LTM, what is the significance of the 'Service Down Action' setting on a virtual server?
Easy118A client is experiencing intermittent connection resets when accessing an application via an LTM Virtual Server. The administrator notices that 'OneConnect' is enabled on the virtual server. What is the most likely cause for these resets?
Medium119Which TWO of the following are benefits of using SNAT (Source Network Address Translation) on a BIG-IP LTM?
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