Network performance

• What is bandwidth in networking?

  Amount of data transmitted in a time
• What does higher bandwidth indicate?

  Quicker download speed
• What are the factors affecting network performance?

  1. Number of users
  2. Latency
  3. Transmission media
  4. Error rate
  5. Wireless performance
• How does the number of users affect network performance?

  Too many users cause the network to slow
• What happens when there are too many users on a network?

  It causes the network to be slow
• What is latency in networking?

  Delay from transmitting to receiving data
• What causes latency?

  Bottlenecks in the infrastructure
• How do wired connections compare to wireless connections in terms of bandwidth?

  Wired connections have higher bandwidth
• Which type of cable has higher bandwidth: fibre optic or copper?

  Fibre optic cables
• Error Rate

  Less reliable connections increase number of errors that occur when data is transferred
• What is the consequence of a high error rate?

  Data is resent until it arrives correctly
• What factors affect wireless performance?

  Signal quality affected by range of devices, interference from other networks, physical obstruct e.g. walls
• What physical obstructions can affect wireless performance?

  Walls and other physical barriers
• What affects the quality and bandwidth of a signal?

  Range of devices

  interference from other networks

  Physical obstructions, e.g. Walls