CCNA: Cisco Certified Network Associate — Question 546

What is the difference between IPv6 unicast and anycast addressing?

Answer options

• A. An individual IPv6 unicast address is supported on a single interface on one node, but an IPv6 anycast address is assigned to a group of interfaces on multiple nodes.
• B. IPv6 anycast nodes must be explicitly configured to recognize the anycast address, but IPv6 unicast nodes require no special configuration.
• C. IPv6 unicast nodes must be explicitly configured to recognize the unicast address, but IPv6 anycast nodes require no special configuration.
• D. Unlike an IPv6 anycast address, an IPv6 unicast address is assigned to a group of interfaces on multiple nodes.

Correct answer: A

Explanation

The correct answer, A, accurately describes that an IPv6 unicast address is unique to a single interface on one device, while an IPv6 anycast address can be associated with multiple nodes. The other options incorrectly state requirements for configuration or misrepresent the nature of unicast and anycast addressing.