Which statement about unique local IPv6 addresses is true?
A. Summarization is not supported.
B. They require all prefixes to be unique.
C. Their global IDs are assigned sequentially.
D. They are routable to the public Internet.
Which statement about unique local IPv6 addresses is true?
A. Summarization is not supported.
B. They require all prefixes to be unique.
C. Their global IDs are assigned sequentially.
D. They are routable to the public Internet.
B
С
global ID — need for a unique
RFC 4193 specifies a method to assign the 40 bit global ID. A semi-random algorithm is defined in the
RFC that offers a very high probability of uniqueness of the global ID. The algorithm for generating
unique local addresses has been implemented in several places
http://www.swissipv6council.ch/sites/default/files/docs/cisco_ipv6_addressing_considerations.pdf
1CAFE, 1DEAD
easily guessed addresses (e.g., DEADBEEF, CAFE, C0FFEE, etc.) is a good security practice
and helps ensure that hackers are unlikely to find any hosts on a network scan.
B
The allocation of Global IDs is pseudo-random
https://tools.ietf.org/html/rfc4193#section-3.2.1
B. They require all prefixes to be unique