INTRODUCTION TO COMPUTERS
COMPUTER NETWORKS AND THE INTERNET
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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128
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256
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64
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32
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Detailed explanation-1: -IPv6 uses 128-bit (2128) addresses, allowing 3.4 x 1038 unique IP addresses. This is equal to 340 trillion trillion trillion IP addresses. IPv6 is written in hexadecimal notation, separated into 8 groups of 16 bits by the colons, thus (8 x 16 = 128) bits in total.
Detailed explanation-2: -An IPv6 address consists of 128 bits. For each of the major addressing and routing methodologies, various address formats are recognized by dividing the 128 address bits into bit groups and using established rules for associating the values of these bit groups with special addressing features.
Detailed explanation-3: -Basically, the 128-bit address space of IPv6 gives us such a massive address space that we are unlikely to ever use all of it (2^128 addresses, or 3.4*10^38). The larger address space also allows for a better hierarchical model of addressing, because CIDR and similar “hacks” are no longer necessary for routing.