Network Topologies

Click to see the rest of the Network Topologies & Protocols section :

In the previous sections, we talked about the different types of network. Network topologies describe the shape of the network which can be different depending on what the network is used for.

Which topology would be used in a wireless network ?

Hover over this box to reveal the answer

A Star Topology

All devices connect through the WAP (Wireless Access Point), making this a Star Topology
More Revision

The shape of the network can be either physical or logical:

  • Physical – the way in which the devices are set out in the building
  • logical – the way in which the decives communicate

Before studying the different types of topology, make sure that you are familiar with the key terms & hardware for networks.

Bus Topology

bus topology - GCSE Computer ScienceA Bus network has a central cable that runs the length of the whole network, called the network backbone. This cable carries the data packets between the nodes on the network.

At each end of the backbone is a cap called a terminator. This allows data packets to bounce back along the backbone if the data packet hasn’t reached its destination. Because all data is carried along the backbone, there is a higher risk of collisions.

Star Topology

star topology - GCSE Computer ScienceStar topologies are the most common type of network topology in modern networks. In a star, each node on the network has its own cable which connects it to a central node. This means if a node becomes disconnected from the network, the network can still function.

However, if the central node fails in a star, the rest of the nodes will lose connection too.

Mesh Topology

mesh topology - GCSE Computer ScienceMesh topologies are used for important networks where failure would cause risk to life or significant loss of money. Banks, hospitals, and national security are examples of places where mesh networks are used.

In a mesh topology, all nodes on the network are connected to all other nodes. This means if one node or cable becomes disconnected, the rest of the network is unaffected.

Find this page helpful? Share the love on your social media mentioning @TeachAllAboutIT and we’ll enter you in our monthly draw to win a gift voucher for any product on the site!

More For Members

Lesson Plan

Coming Soon!

Presentation

Coming Soon!

Homework

Coming Soon!

Students

Coming Soon!

Not a member yet? Sign Up Here

Sign Up For Membership Today

Level Price  
Individual Teacher £3.99 per Month. After your initial payment, your first payment is Free. Select
Individual Student £2.50 per Month. After your initial payment, your first payment is Free. Select
Whole School £12.50 per Month. Select
iGCSE Computer Science Distance Learning (Feb Start) £21.00 now and then £21.00 per Month for 15 more Months. Select
iGCSE Computer Science Distance Learning (Sept Start) £21.00 now and then £21.00 per Month for 15 more Months. Select