Information Technology Reference
In-Depth Information
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 positions that refer to the host portion of the address.
Understand IPv6.
Understand the structure of an IPv6 address and how it's displayed.
Know the shortcuts and rules (such as for displaying 0s) for writing IPv6 addresses. Know
the integration/migration components for IPv6 included in Windows Server 2012 R2,
including tunneling and dual stack.
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