How many subnets does a /56 prefix allow, when using /64 subnets?

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Multiple Choice

How many subnets does a /56 prefix allow, when using /64 subnets?

Explanation:
Subnetting in IPv6 is done by extending the prefix length. Moving from a /56 to /64 adds eight bits that define the subnets. Each bit doubles the number of subnets, so you get 2^8 subnets. That equals 256 distinct /64 subnets within the /56 prefix. In IPv6, /64 is the standard subnet size, so a /56 gives 256 candidate /64 subnets.

Subnetting in IPv6 is done by extending the prefix length. Moving from a /56 to /64 adds eight bits that define the subnets. Each bit doubles the number of subnets, so you get 2^8 subnets. That equals 256 distinct /64 subnets within the /56 prefix. In IPv6, /64 is the standard subnet size, so a /56 gives 256 candidate /64 subnets.

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