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AZ-802 · Networking · Networking | Implement on-premises and hybrid name resolution

Practice question 172 of 506 · hard

A DHCP failover partner leases addresses successfully but cannot update secure DNS records created by the other server. Their DNS-update credentials differ. What should be investigated?

Choose the single best answer.

  1. A.Moving the records into a stub zone so both servers can overwrite them
  2. B.Record ownership/ACLs and a consistent authorized DNS-update identity on both partners
  3. C.Replacing secure updates with anonymous writes for the whole AD zone
  4. D.Increasing DNS TTL as the fix for record update permissions
Show the answer and explanation

✓ Correct answer

  • Record ownership/ACLs and a consistent authorized DNS-update identity on both partners

Secure updates enforce identity and ownership, so aligned authorized DHCP credentials and ACL review address the cause. Anonymous writes weaken the stated security requirement. TTL governs caching rather than write permissions, and stub zones are not complete writable record stores.

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