Networks

Network Hardware

Hub:

• Passes all data to all computers
• Leads to unneccassary network trafic

Network Interface Card/ Network Adapter:

• Conects computer to network
• Formats data using correct protocols.

Switch:

• Examines data packets find destination address.
• Does not pass on the data to all parts of network.
• Reducs unnecessary network traffic.

Networking

Wired vs. Wireless:

• Wireless:
  • Can be moved anywhere in LAN.
  • Internet connection/speed may be affected.
  • Obsticles such as walls, doors or people can slow down the speed.
  • Quick and cheap to connect devices once hub is owned.
  • No tripping hazard.
  • More devices can be connected - no plug in.
• Wired connection:
  • Direct link to network.
  • Increase in network speed.
  • No obstructions e.g. walls to obstruct the path of data.
  • Hard to eavesdrop on.

Signal Quality:

• Poor signal quality:
  • Takes longer for data to get through.
  • Hard to connect to network.
• Good signal quality
  • Connect more easily to network.
  • …