Network topology 3 a

801 views

Published on

0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
801
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
0
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Network topology 3 a

  1. 1. Network Topology
  2. 2. Network Topology• This refers to the ways computers and peripherals can be connected on a network.• There are three main topologies; star, bus and ring.
  3. 3. Star Topology• This is the most popular. It involves several computers that are connected to a central point like a Switch or router. The switch allows the computers, servers and printers.• The advantages of a star network is that new computers and printers can be added easily as long as there are ports on the switch available. IT can deal with the fast transfer of data and it doesn’t rely on other computers working.• The disadvantage of a star network is that if the switch is broken then the network can’t function. It also uses a lot of cabling.
  4. 4. Diagram of a star network
  5. 5. Bus Topology• This involves computers on a network sharing the same transmission medium. It used to be popular with the use of coaxial cabling.• Advantages are that it uses less amount of cables.• Disadvantages of this topology is that is has collisions of data, which means the network slows down if there is lots of users sending and receiving data. A wireless network is often referred to a bus network because the devices share the same medium.
  6. 6. Bus Network
  7. 7. Ring Topology• Computers in this network work a bit like repeaters- they receive an incoming signal and if the message is not addressed for the receiving computer then it passes it on to the next computer in the ring.• Advantage is it is relatively cheap to set up.• Disadvantage is that if one device breaks down then the network can’t function and as you add more devices the network slows down.
  8. 8. Ring Topology
  9. 9. Network Operating System•This is different to a normal operating system. Itis loaded onto the server only.•It has specific role to;-manage user accounts (user names andpasswords)- manage printers and which users can accesswhich printers.-manages firewalls-Monitors network activity-Manages who has access to which storagedrives.
  10. 10. Network Operating System•This is different to a normal operating system. Itis loaded onto the server only.•It has specific role to;-manage user accounts (user names andpasswords)- manage printers and which users can accesswhich printers.-manages firewalls-Monitors network activity-Manages who has access to which storagedrives.

×