Which of the following statements about subnet masks is NOT true?

A. A "0" in the subnet mask indicates part of the network ID.
B. All machines on the same network have the same subnet mask.
C. The subnet mask can be expressed either in dotted decimal or in the/x notation (example: 192.168.14.3/24)
D. The subnet mask is the same length as an IP address.

Answer: A

Computer Science & Information Technology

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