NTC/362: Fundamentals of Networking
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NTC/362: Fundamentals of Networking
Q: Which IPv6 addresses represent a global IPv6 address?
Each correct answer represents a complete solution. Choose all that apply.
A: 2001:db8:85a3::8a2e:370:7334, 2a10::abd:3eb2:1234
Explanation: 2001:db8:85a3::8a2e:370:7334 and 2a10::abd:3eb2:1234 are the global IPv6 address. Global addresses make up most of the IPv6 address space. Originally, IANA reserved prefix 2000::/3 for global unicasts (that is, all addresses that begin with 2 or 3), but have since revised the definition to include all addresses not otherwise reserved.
Answers A and B are incorrect. FF02::a is a multicast address and fe80::3af:fe24:4567:890a is a link-local address. Note that IANA also reserves all addresses with the prefix FE80::/10 as link-local addresses, and all addresses that begin with prefix FF00::/8 as multicast addresses.
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