Computer Networking · Beginner level

Beginner level · Module 1: IP Addresses, Routers and Switches · Lesson 3 of 3

Routers, Switches and Access Points

Know what each device does and how they connect.

In this lesson you will

  • Distinguish routers, switches and access points
  • Choose cables and connectors

Key concepts

routerswitchaccess pointEthernet cables

The lesson

A switch connects devices within a LAN and forwards traffic between them. A router connects different networks — your LAN and the internet — and usually provides DHCP and a firewall.

An access point connects wireless devices to the LAN. Home 'routers' combine router, switch and access point in one box.

Ethernet cables (Cat 5e or Cat 6) connect devices with RJ45 plugs; fibre is used for long or high-speed links.

Step by step

  1. Identify each device in the lab.
  2. Trace cables between them.
  3. Label ports.
  4. Explain each device's role.

Practice activity

Label the lab network's devices, ports and cables.

Expected result: A correct, labelled lab diagram.

Check your understanding

  1. Which device connects your LAN to the internet?

    Show answer

    A router.

  2. What does an access point do?

    Show answer

    Connects wireless devices to the LAN.

Taught live by an instructor — online or in person. Free course lessons are for self-study and do not lead to a certificate — see registration options.