1. Networks Network topologies

2. Networks Network topology Is the way the devices are arranged in a network In a wired network, it shows how the computers are connected together In a wireless network it shows how the computers communicate with each other

3. Networks Network topologies The three main network topologies are: Ring Bus Star

4. Networks The ring topology The computers are arranged in a circle Data passes around the ring until it reaches the correct computer They are simple to set up It is easy to add extra computers A break in a wire can cause the network to fail

5. Networks The bus topology A backbone cable is usually used A small amount of cable is needed Simple to install Easy to add extra devices Slow for larger networks Reliance on the backbone cable

6. Networks The star topology Uses a central connection point This can be a server or a hub/switch They use a lot of wire They depend on the central device Easy to add extra computers without disturbing the network Fault tolerant

7. Networks Question Produce a list outlining the advantages and disadvantages in networking computers. The first advantage and disadvantage has been completed for you. AdvantagesDisadvantages Ability to share filesTechnical knowledge needed to set one up

8. Networks Answers AdvantagesDisadvantages Ability to share filesTechnical knowledge needed to set one up Can share hardwareNetworks can fail Can share softwareMay need to employ a network manager Saves time as software can be installed centrally rather than on each computer Risk of viruses entering the system Improved security (e.g., passwords, encryption, etc.) Danger of hackers accessing files using the Internet Can back up data centrallyWiring can be expensive Can use services such as email Access to a central store of data