Question

A network administrator is adding a new VLSM subnet(3) to an existing network. Which of the following best describes a VLSM subnet?

A) A subnet with a fixed mask for all hosts in the network.
B) A subnet with variable-length masks for different segments.
C) A subnet that uses only Class A addresses.
D) A subnet that uses dynamic IP addressing.

Answer 1

A VLSM subnet is a subnet that uses variable-length masks for different segments, allowing for efficient IP address allocation and minimization of wasted addresses.

Step-by-step explanation:

The Variable Length Subnet Masking (VLSM) is a method that allows network administrators to divide an IP address space into subnets of different sizes, unlike traditional subnetting which uses the same subnet mask across all subnets. Therefore, the best description of a VLSM subnet is B) A subnet with variable-length masks for different segments. This approach improves the efficiency of IP address allocation by minimizing the waste of IP addresses which is common in traditional fixed-length subnet masking.