DNS queries from two internal DNS servers are being load balanced to external DNS Servers via a Virtual Server on a BIG-P device. The DNS queries originate from 192.168.101.100 and 192.168.101.200 and target 192.168.21.50. All DNS queries destined for the external DNS Servers fail. Which property change should the BIG-IP Administrator make in the Virtual Server to resolve this issue?

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C. Protocol to UDP DNS queries typically use the User Datagram Protocol (UDP) for transport; therefore, setting the virtual server's protocol to UDP ensures that it correctly handles and forwards DNS traffic.

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A. Protocol Profile (Client) to DNS-OPTIMZED The DNS-OPTIMIZED profile is a specialized DNS profile, but changing the basic virtual server protocol from an incorrect one (e.g., TCP) to UDP is a more fundamental step for resolving query failures.

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B. Type to Performance (HTTP) Changing the virtual server type to Performance (HTTP) is incorrect because DNS uses UDP, not HTTP, and this setting would misconfigure the virtual server for DNS traffic.

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D. Source Address to 192.168.101.0/24 Modifying the Source Address setting on the virtual server restricts incoming connections but does not address the underlying issue of the virtual server incorrectly handling the DNS protocol itself.

DNS queries from two internal DNS servers are being load balanced to external DNS Servers via a Virtual Server on a BIG-P device. The DNS queries originate from 192.168.101.100 and 192.168.101.200…

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