Question

Which of the following terms are often synonymous with or made possible with CIDR?

A. Classless
B. VLSM

Answer 1

CIDR, which stands for Classless Inter-Domain Routing, is a method of efficiently allocating IP addresses. CIDR is often associated with the terms 'classless' and 'VLSM' which refer to its flexible addressing structure and the ability to create variable length subnet masks.

Step-by-step explanation:

CIDR stands for Classless Inter-Domain Routing and is a method used to allocate IP addresses more efficiently. CIDR allows for the subdivision of IP addresses into smaller, more flexible blocks, which is in contrast to the traditional class-based addressing system. This results in reduced address waste and more efficient utilization of address space.

Two terms often synonymous with CIDR are:

1. Classless: CIDR is considered classless because it does not adhere to the rigid class-based addressing system. Instead, it allows for the use of variable-length prefixes, which enables more precise allocation of IP addresses.
2. VLSM: VLSM stands for Variable Length Subnet Mask. It is a technique that falls under the concept of CIDR and allows for the allocation of subnet masks with varying lengths. VLSM enables the creation of smaller subnets within larger networks, maximizing the efficient use of IP addresses.