Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 560

What is the purpose of the DHCPv6 Guard?

Answer options

• A. It messages between a DHCPv6 server and a DHCPv6 client (or relay agent).
• B. It allows DHCPv6 reply and advertisements from (rogue) DHCPv6 servers.
• C. It shows that clients of a DHCPv6 server are affected.
• D. It blocks DHCPv6 messages from relay agents to a DHCPv6 server.

Correct answer: D

Explanation

The correct answer is D because DHCPv6 Guard is designed to block messages from relay agents to the DHCPv6 server, preventing potential unauthorized access. Option A is incorrect as it describes communication rather than blocking. Option B is also wrong since DHCPv6 Guard aims to restrict messages from rogue servers, not allow them. Option C does not accurately represent the role of DHCPv6 Guard.