Which multicast scope is intended for communications with all nodes on the link in IPv6?

The correct answer is based on the scope designated for link-local multicast addresses in IPv6. The multicast address that is specifically intended for communication with all nodes on the local link is FF02::1. This address allows any device within the same local network segment to join the multicast and receive packets sent to this address.

Each multicast address in IPv6 has a defined scope, which indicates how far the multicast message can travel within the network. The scope for FF01 is reserved for node-local addresses which are used for communication between interfaces on the same node only, making it more limited than FF02. FF05 is associated with site-local scope, which allows communication across multiple subnets within a site, while FF08 is used for organization-local multicast addresses, which can span multiple sites but is still broader than link-local communication.

Thus, FF02 is the appropriate choice for multicast communications intended specifically for all nodes on the local link in an IPv6 network.