Which of the following defines the primary characteristic of Variable Length Subnet Masks (VLSM)?

A) Within one classful network, multiple subnet masks are used.
B) Within one classful network, only one subnet mask is used.
C) Within multiple classful networks, multiple subnet masks are used.
D) Within multiple classful networks, one subnet mask is used.


A
Explanation: A) With VLSM, multiple subnet masks are used within one classful network (such as a Class A network with both a /24 and a /30 mask).

Computer Science & Information Technology

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