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✓ Correct answer: D. Unique local unicastAnswer: Unique local unicast Unique local addresses are non-routable IPv6 addresses in the FC00::/7 range. They are used within a private network, similar to private IP addresses in IPv4 (e.g., 192.168.x.x). Global unicast addresses are routable on the Internet and are in the range 2000::/3. Link-local unicast addresses are used on a single link and have the prefix FE80::/10. IPv6 multicast addresses, used to send packets to multiple interfaces, are in the FF00::/8 range.
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