Chapter 20. Variable-Length Subnet Masks

This chapter covers the following exam topics:

IP addressing (IPv4/IPv6)

Identify the appropriate IPv4 addressing scheme using VLSM and summarization to satisfy addressing requirements in a LAN/WAN environment.

Troubleshooting

Troubleshoot and correct common problems associated with IP addressing and host configurations.

IPv4 addressing and subnetting use a lot of terms, a lot of small math steps, and a lot of concepts that fit together. While learning those concepts, it helps to keep things as simple as possible. One way this book has kept the discussion simpler so far was to show examples that use one mask only inside a single Class A, B, or C network.

This chapter removes that restriction by introducing ...

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