Objective 1.13 Given a Scenario Determine the Impact of a Custom DNS Profile for Various Types of Queries, Determine What Response Will Be Given and Where It Will Come From 302 Practice Questions (Page 5)

Questions 21–25

1. 21application · medium

   A BIG-IP DNS profile has DNS Express enabled for the zone example.com, DNS cache enabled, and GTM disabled. A client sends a query for a record that exists in the DNS Express zone data. What is the source of the response?

   • ADNS Express, because it serves authoritative responses from memory
   • BGTM, because it handles all queries for example.com
   • CBIND, because it is the underlying server
   • DThe DNS cache, because it caches all responses
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   Which feature in a BIG-IP DNS profile allows the system to serve authoritative responses directly from memory without querying upstream servers?

   • ADNS cache
   • BDNS Express
   • CBIND integration
   • DGTM enablement
   Reveal Solution Discussion Select an answer first
4. 23application · medium

   A BIG-IP DNS profile has DNS Express enabled for the zone example.com, BIND enabled, and DNS cache disabled. A client sends a query for a record in example.com that is not in the DNS Express zone data. What is the source of the response?

   • AThe DNS cache, because it stores all responses
   • BGTM, because it handles all queries for example.com
   • CBIND, because the query is not handled by DNS Express
   • DDNS Express, because it is authoritative for the zone
   Reveal Solution Discussion Select an answer first
5. 24expert · hard

   A company runs a global web application with multiple data centers. They want BIG-IP DNS to provide GSLB for their domain, serve a large static zone authoritatively from memory, and also allow the underlying BIND server to handle queries for other zones. Which combination of DNS profile features should be enabled?

   • ADNS Express and BIND
   • BGTM, DNS Express, and BIND
   • CGTM and DNS cache
   • DGTM and DNS Express
   Reveal Solution Discussion Select an answer first
6. 25foundation · easy

   What is the primary effect of enabling the DNS cache feature in a BIG-IP DNS profile?

   • AIt loads zone files into memory for authoritative responses.
   • BIt disables all other DNS profile features.
   • CIt forwards all queries to the GTM process for load balancing.
   • DIt stores responses to previous queries and serves them for subsequent matching queries.
   Reveal Solution Discussion Select an answer first