Objective 2.03 Given a Set of Requirements Select the Appropriate Load Balancing Methods [ex. Wide IP Level, Pool Level, Different Types and Combinations] 302 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which scenario is best suited for configuring multiple pools rather than a single pool?

   • AWhen all virtual servers have identical capabilities and are in the same location.
   • BWhen different groups of virtual servers need to be managed with different load balancing methods or priorities.
   • CWhen the total traffic is low and only one virtual server is needed.
   • DWhen all virtual servers are in the same data center and have the same capacity.
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   What is the effect of an iRule that uses the `LB::select` command within a pool?

   • AIt changes the pool's load balancing method to round robin.
   • BIt marks the selected member as down.
   • CIt overrides the pool's load balancing method and selects a specific member.
   • DIt only works if the pool has a single member.
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   What happens if both the primary and secondary load balancing methods in a pool fail to return a result?

   • AThe request is dropped and the client receives no response.
   • BThe pool is marked down, and the Wide IP uses the fallback method.
   • CTraffic is sent to the first member in the pool.
   • DThe fallback method is used to return a result, if configured.
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5. 4application · medium

   An organization runs a mission-critical web application in two data centers. Each data center has a single pool of web servers. The BIG-IP DNS Wide IP is configured with the default round-robin load balancing method. During a maintenance window, all virtual servers in the second data center are taken offline. What will happen to client requests for the application?

   • AAll requests will be sent to the first data center because the second data center's virtual servers are down.
   • BRequests will continue to be distributed evenly between both data centers because the Wide IP uses round-robin.
   • CRequests will fail because the Wide IP requires at least two available data centers to respond.
   • DRequests will be sent to the first data center, but only after a timeout delay while the system attempts to contact the second data center.
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A company has a Wide IP with two pools: 'Pool_A' and 'Pool_B'. They have an iRule attached to the Wide IP that uses the 'LB::select' command. The iRule is designed to select 'Pool_A' for all requests. However, the administrator notices that some requests are still being sent to 'Pool_B'. What is the most likely reason for this?

   • AThe iRule is only executed when the primary load balancing method fails.
   • BThe iRule is being overridden by a topology record.
   • CThe 'LB::select' command is not supported on Wide IPs.
   • DThe iRule is not attached to the correct Wide IP or virtual server.
   Reveal Solution Discussion Select an answer first