Question

Which of these IPv6 address types is best used for hosts that are reachable from the Internet?

A) Global unicast addresses

B) Link-local addresses

C) Unique local addresses

D) Protected global addresses

Answer 1

Global unicast addresses are the best option for hosts to be reachable from the Internet, as they are globally unique and routable.

Step-by-step explanation:

The type of IPv6 address best used for hosts that need to be reachable from the Internet is A) Global unicast addresses.

These addresses are globally unique and routable on the Internet, much like IPv4 public IP addresses. In contrast, B) Link-local addresses are only valid within the context of a single local network link and are not routable on the Internet. C) Unique local addresses are designed for local communications within a site or organization and are not intended to be routable on the global Internet. There is no standard category named D) Protected global addresses, so this option is invalid.