An ISP has assigned prefix 3000:1234:5678::/48 to Company1. Which of the following terms
would typically be used to describe this type of public IPv6 prefix?

A.
Subnet prefix

B.
ISP prefix

C.
Global routing prefix

D.
Registry prefix

Explanation:
The name of the prefix generally represents the group to which the prefix is given, with the
exception of the term global routinG. IANA assigns a prefix to a registry (registry prefix). The
registry may assign a subset of that range as a prefix to an ISP (ISP prefix). That ISP then
subdivides that range of addresses into prefixes and assigns a prefix to one of its customers
(site prefix, also called global routing prefix). The Enterprise network engineers then further
subdivides the range, often with prefix length 64, into subnet prefixes.