Computer Networking · Beginner level

Beginner level · Module 5: Small Office Network Design · Lesson 2 of 3

Network Diagrams

Draw diagrams that show how the network is built.

In this lesson you will

  • Draw a logical and physical network diagram
  • Use consistent symbols and labels

Key concepts

physical diagramlogical diagramsymbolslabels

The lesson

A physical diagram shows where equipment and cables are; a logical diagram shows networks, addresses and how traffic flows.

Use standard symbols for routers, switches, access points and devices, and label names, IP addresses and ports.

Free tools such as diagrams.net work well; keep diagrams updated when the network changes.

Step by step

  1. Sketch the physical layout.
  2. Draw the logical diagram.
  3. Label devices and addresses.
  4. Review with a classmate.

Practice activity

Draw the project's network diagrams.

Expected result: Clear, labelled physical and logical diagrams.

Check your understanding

  1. What does a logical diagram show?

    Show answer

    Networks, addresses and how traffic flows.

  2. When should diagrams be updated?

    Show answer

    Whenever the network changes.

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