NETWORK LAYER
NEXT GENERATION IP
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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/40
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/52
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/64
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/80
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Detailed explanation-1: -There are several common prefix lengths for IPv6. A /64 is the size of a single LAN. As a customer you often get a /56 (256 LANs) or a /48 (65, 536 LANs) from your ISP. You can then create multiple LANs which need a /64 each.
Detailed explanation-2: -The example IPv6 address has the following subnet prefix. The subnet prefix always contains 64 bits. These bits include 48 bits for the site prefix, in addition to 16 bits for the subnet ID.
Detailed explanation-3: -IPv6 Learning Resources A single /64 subnet has 18, 446, 744, 073, 709, 551, 616 usable host addresses. A /48 network has 65, 536 /64 subnets.
Detailed explanation-4: -IPv6 addresses are 128 bits wide, but the last 64 bits are always host bits. Whilst it is possible to use a prefix longer than /64 (i.e. fewer host bits), this is **strongly discouraged **as various features of IPv6 depend on this convention.