CCNA: Cisco Certified Network Associate — Question 1079

What is the difference between an IPv6 link-local address and a unique local address?

Answer options

• A. The scope of an IPv6 link-local address is limited to a directly attached interface, but an IPv6 unique local address is used throughout a company site or network.
• B. The scope of an IPv6 link-local address is global, but the scope of an IPv6 unique local address is limited to a loopback address.
• C. The scope of an IPv6 link-local address can be used throughout a company site or network, but an IPv6 unique local address is limited to a loopback address.
• D. The scope of an IPv6 link-local address is limited to a loopback address, and an IPv6 unique local address is limited to a directly attached interface.

Correct answer: A

Explanation

The correct answer, A, is accurate because an IPv6 link-local address is indeed restricted to the local network segment, while a unique local address can be used throughout a site or network. Options B and C incorrectly describe the scopes, while option D misrepresents both types of addresses.