What is a Variable Length Subnet Mask (VLSM), and how is it created?
What will be an ideal response?What will be an ideal response?
ANSWER: Traditional subnetting reduces the waste of IP addresses, but results in multiple subnets that are all the same size. This uniformity in subnet size can be inefficient in complex networks. VLSM (Variable Length Subnet Mask) allows subnets to be further subdivided into smaller and smaller groupings until each subnet is about the same size as the necessary IP address space. This is often referred to as "subnetting a subnet." To create VLSM subnets, you create the largest subnet first. Then you create the next largest subnet, and the next one and so on, until you have divided up all the remaining space. In this way, you ensure that the largest subnets get the space they need, and the smallest subnets are also sized appropriately.
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