Which prefix identifies IPv6 multicast addresses?

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Multiple Choice

Which prefix identifies IPv6 multicast addresses?

Explanation:
In IPv6, multicast addresses are identified by a prefix that starts with ff. The designated block is ff00::/8, meaning any IPv6 address whose first eight bits are 11111111 (ff) is a multicast address. This distinguishes multicast from unicast and any IPv6 addresses that don’t start with ff. For contrast, fe80::/10 is the link-local unicast range, not multicast, and the other options are IPv4 constructs (255.255.255.0/24 and 224.0.0.0/4) or relate to IPv4, not IPv6 multicast.

In IPv6, multicast addresses are identified by a prefix that starts with ff. The designated block is ff00::/8, meaning any IPv6 address whose first eight bits are 11111111 (ff) is a multicast address. This distinguishes multicast from unicast and any IPv6 addresses that don’t start with ff. For contrast, fe80::/10 is the link-local unicast range, not multicast, and the other options are IPv4 constructs (255.255.255.0/24 and 224.0.0.0/4) or relate to IPv4, not IPv6 multicast.

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