TREKNOWGOOSEPILOT

Solve the anagram.

What do these

represent?

NETWORKTOPOLOGIES

Solve the anagram.

What do these

represent?

RING

BUS STAR

*Lesson Objective

Define the different Network Topologies

Identify advantages and disadvantages for each of the topologies

*Ring Network

The clients, servers, printers and other components are connected to one another in a circular shape with cables. The data passes

from one client to the next in one direction until it reaches it’s destination.

*Bus Network

A single cable connects all of the clients, printers, servers and other components together. At each end there is a terminator. This stops data falling off the end or echoing

back…echoing back…echoing back…

*Star Network

Clients, printers, servers and other components are connected by their own

cables directly to the server. These are usually the layout choice in schools and businesses.

*COMPETITIONReplicate the networks in groups.

Complete the worksheetsIdentify advantages & disadvantages of your

network.Tell the class your findings.

*Winners get Chocolate

String = CablesBus Network = Two people as cables

You = Clients and one person must be a server. Assign yourself a code. E.g. PC1, PC2, PC3 etc. or Server

Post it notes & Paper clips = Packets of dataOn your post it note write your message and it’s destination

*Ring NetworkAdvantage

• Transmissions are simple as data travels in one direction

• No Data Collisions• Extra computers can be added easily but

the network must be shut down to do so.

Disadvantage• If a single machine is switched off the

network fails.• If a cable breaks, the network fails.• Data must pass through every

computer.• Problems within the network can be hard

to fix.

*Bus Network

Advantage• Easy to install• Cheap to install, as it doesn’t require much cable• Easy to add extra Workstations

Disadvantage• If the main cable fails or gets damaged the whole

network will fail.• As more workstations are connected the performance

of the network will become slower because of data collisions

• Every workstation on the network "sees" all of the data on the network – this is a security risk

*Star Network

Advantage• Very reliable – if one cable or device fails then all the

others will continue to work• High performing as no data collisions can occur

Disadvantage• Expensive to install as this type of network uses the

most cable (network cable is expensive)• Extra hardware required (hubs or switches) which

adds to cost • If a hub or switch fails all the devices connected to it

will have no network connection

*Ring NetworkAdvantages

Disadvantages

Definition

*Bus NetworkAdvantages

Disadvantages

Definition

*Star NetworkAdvantages

Disadvantages

Definition