These type of addresses are defined for a group of networking devices
a. Global Unicast
b. Multicast
c. Anycast
d. Link-local
b. Multicast
Explanation: Global unicast addresses are equivalent to the public IP addresses in IPv4 . They have unlimited scope and are routable on the Internet. Multicast IPv6 addresses are defined for a group of networking devices. Data packets sent to a multicast address are sent to the entire group of networking devices such as a group of routers running the same routing protocol. The anycast IPv6 addresses may seem like a new type of address, but its concept is not new. Anycast addresses can be thought of a cross between unicast and multicast addresses. Although the unicast traffic sends information to one address and the multicast traffic sends information to every address in the group, the anycast traffic sends information to any one address of the group. Link-local addresses are designed to be used for and are limited to communications on the local link. Every IPv6 interface will have one link-local address.
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