AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 94

You have two VPCs that require DNS resolution from your on-premises data center. You want to have a DNS server in the cloud, but you don't want to have multiple DNS servers.
What two steps should you take? (Choose two.)

Answer options

• A. Peer the VPCs and set up routes between them.
• B. Create a VPN between the two VPCs
• C. Configure DHCP option sets in both VPCs to point to the DNS server.
• D. Configure a Route 53 record to forward all DNS requests to the DNS server.

Correct answer: A, C

Explanation

The correct actions are to peer the VPCs and configure DHCP option sets to point to the DNS server. Peering enables the VPCs to communicate directly, while the DHCP options ensure that instances in both VPCs use the same DNS server. The other options do not address the requirement of using a single DNS server across both VPCs effectively.