101 · Question #107
Which two must be included in a WidelP definition for the WidelP to resolve a DNS query? (Choose two.)
The correct answer is A. a name C. a load balancing method. A Wide IP requires a name (the FQDN it resolves) and a load balancing method at minimum for GTM to match incoming DNS queries and determine how to respond to them.
Question
Which two must be included in a WidelP definition for the WidelP to resolve a DNS query? (Choose two.)
Options
- Aa name
- Ba monitor
- Ca load balancing method
- Done or more virtual servers
How the community answered
(40 responses)- A88% (35)
- B8% (3)
- D5% (2)
Why each option
A Wide IP requires a name (the FQDN it resolves) and a load balancing method at minimum for GTM to match incoming DNS queries and determine how to respond to them.
The name is the FQDN that the Wide IP is configured to answer for; without it, GTM has no DNS query pattern to match and cannot identify which Wide IP should respond to a client request.
A monitor is not required directly in a Wide IP definition; health monitoring is optional and is typically configured at the pool or virtual server level rather than mandated at the Wide IP.
A load balancing method is required so the GTM System knows the algorithm - such as round robin, ratio, or topology - to use when selecting among associated pools or virtual servers to return in the DNS response.
Virtual servers are members of pools, and pools are associated with Wide IPs; virtual servers are not a direct required component of the Wide IP definition itself.
Concept tested: F5 GTM Wide IP minimum required configuration elements
Source: https://techdocs.f5.com/en-us/bigip-14-1-0/big-ip-dns-implementations/managing-wide-ips.html
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