Objective 1.14 Given a Scenario with a Specific Query Source IP Address and Various Pool and Wide IP Loading Balancing Methods and Topology Rules/regions Determine the Response That Will Be Given 302 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A Wide IP uses 'Global Availability' as the load balancing method. PoolA is down, PoolB is up, and PoolC is up. A query arrives from a source IP that does not match any topology record. Which pool is selected?

   • APoolB, because it is the first available pool in the list
   • BEither PoolB or PoolC, because both are available
   • CPoolC, because it is the last available pool
   • DPoolA, because it is the first in the list
   Reveal Solution Discussion Select an answer first
2. 7application · medium

   A Wide IP uses the 'Ratio' load balancing method with PoolA ratio 3 and PoolB ratio 1. A DNS query arrives from a source IP that does not match any topology record. What is the expected behavior?

   • APoolA will be returned 75% of the time and PoolB 25% of the time
   • BPoolA will always be returned because it has a higher ratio
   • CPoolA and PoolB will alternate evenly
   • DPoolB will be returned first because it has a lower ratio
   Reveal Solution Discussion Select an answer first
4. 8expert · hard

   A Wide IP has three pools: PoolA (US), PoolB (Europe), and PoolC (Asia). Topology records match 10.0.0.0/8 to PoolA and 172.16.0.0/12 to PoolB. The Wide IP method is 'Round Robin'. A query arrives from source IP 192.168.1.1. What pool is selected?

   • ANo pool, because the source IP is not in any topology range
   • BPoolB, because the source IP is in the 172.16.0.0/12 range
   • CPoolC, because no topology record matches and round robin selects the next pool
   • DPoolA, because the source IP is in the 10.0.0.0/8 range
   Reveal Solution Discussion Select an answer first
5. 9foundation · easy

   A Wide IP has no topology records. The Wide IP load balancing method is ratio, with Pool A ratio 2 and Pool B ratio 1. Pool A uses round robin, and Pool B uses least connections. A query arrives from source IP 203.0.113.10. What is the final response?

   • AEither Pool A or Pool B, and the virtual server selected by the pool's respective load balancing method
   • BPool A, and the virtual server with the fewest connections
   • CPool B, and a virtual server selected by least connections
   • DPool A, and a virtual server selected by round robin
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   A Wide IP is configured with the round robin load balancing method. The Wide IP has two pools: Pool A and Pool B. A query arrives from source IP 203.0.113.10. Assuming no topology rules are in effect, which pool will BIG-IP DNS select for this query?

   • AEither Pool A or Pool B, depending on the sequence of previous queries
   • BPool B, because round robin selects the pool with the fewest connections
   • CThe pool that has the lowest current load
   • DPool A, because round robin always selects the first pool
   Reveal Solution Discussion Select an answer first