Which of the following is a private IPv4 address block within the 172 range?

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Multiple Choice

Which of the following is a private IPv4 address block within the 172 range?

Explanation:
Private IPv4 addresses are set aside for internal networks and aren’t routable on the public Internet. RFC 1918 defines three private ranges: 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. Within the 172.x space, the private block is 172.16.0.0/12, which covers 172.16.0.0 through 172.31.255.255. So the address block 172.16.0.0/12 is the private 172-range block. The other options don’t fit because they either start outside the private window or span addresses outside the 172.16.0.0/12 range.

Private IPv4 addresses are set aside for internal networks and aren’t routable on the public Internet. RFC 1918 defines three private ranges: 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. Within the 172.x space, the private block is 172.16.0.0/12, which covers 172.16.0.0 through 172.31.255.255. So the address block 172.16.0.0/12 is the private 172-range block. The other options don’t fit because they either start outside the private window or span addresses outside the 172.16.0.0/12 range.

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