Exam Essentials
Understand what subnetting is and when to use it.
If an organization is large and has many computers or if its computers are geographically dispersed, it’s sensible to divide its large network into smaller ones connected by routers. These smaller networks are called subnets. Subnetting is the process of carving a single IP network into smaller, logical subnetworks.
Understand subnet masks.
For the subnet address scheme to work, every machine on the network must know which part of the host address will be used as the subnet address. The network administrator creates a 32-bit subnet mask consisting of 1s and 0s. The 1s in the subnet mask represent the positions that refer to the network or subnet addresses. The 0s represent the ...
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