Which of the following three sets of IP addresses and subnet
masks are private IP addresses?

A. 10.0.0.0 255.0.0.0

B. 172.16.0.0 255.255.0.0

C. 172.16.0.0 255.240.0.0

D. 192.168.0.0 255.255.0.0



Which of the following three sets of IP addresses and subnet masks are private IP addresses? A. ..

Answer / guest

Answer: A, C, and D

The IP addresses and subnet masks that are for use on
private networks are 10.0.0.0 ? Mask 255.0.0.0, 172.16.0.0
through 172.31.255.255 ? Mask 255.240.0.0, and 192.168.0.0
through 192.168.255.255 ? Mask 255.255.0.0. Usually,
networks that don?t connect to the global Internet use these
addresses. If these addresses are used in a network that
also uses a globally unique IP address or registered
address, the private addresses must be filtered with access
lists to avoid advertising them to the Internet.

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