Subnetting

What the resources cover

The resources on this page approach subnetting through questions, diagrams and flashcards. They include IPv4 subnet masks and prefix lengths, the network, subnet and host parts of an address, and questions about IPv6. The mind map “Chapter 8: Division of IP networks into subnets” covers network segmentation, routing schemes and IPv6 design considerations.

The flashcard deck on IP subnetting and NAT asks about reasons for subnetting, what a subnet mask does and what slash notation tells you. The page also lists notes on subnetting and IP addressing.

Choose a starting point

Start with the mind map “Chapter 8: Division of IP networks into subnets” for an overview of the material it covers. Then use the flashcards on IP subnetting and NAT to work through questions about masks and notation at your own pace.

For quiz practice, “Module Quiz - IPv4 Addressing” includes a question about converting a subnet mask to prefix length notation. “Multiple Choice Question” asks about the number of host addresses available with a given mask. “CCNA – Subnetting” includes a question about choosing a mask for a network.

Use maps and quizzes together

After looking through a map, try a quiz and note the questions you want to examine again. Return to the map to locate the related material, or use the flashcards to practice the wording of questions about masks and notation. You can repeat the process with another quiz when you are ready.

Explore this section

Subnetting is a section of the IP Addressing and Subnetting unit in Networks and telecommunications. The resources here offer different ways to work through material in that section, from an overview of network division to individual subnetting questions.

Choose a resource and explore the section.