Networks and CommunicationsCommunication Media and Software, Network design and creation, connectivity standards, protocols, security, operating systems.

Network Performance

Syllabus Detail Draft

  • Factors influencing the performance of a network 12 ATAR

Background

  • Networks are created to give people access to resources in the business, school and home environments.
  • These resources can provide access to printers, to data, to the internet and much more.
  • A network is a complicated thing and needs to have the correct hardware, software and setup for it to work efficiently.

Bandwidth

  • Used with download and upload when using the internet.
  • How much data can be transferred in a period of time.
  • It is measured in bits per second (bps), megabits per second (Mbps)

Network Design

  • The design aspects of the  network which ensure that it is running at optimal performance including: Survivability, Traffic engineering, Dimensioning.
  • Is there adequate hardware?

Data Collisions

  • Packets of data can collide if the network is congested and when this occurs the data is lost.
  • The whole packet is required to send again.
  • This slows down the network decreasing the performance.
  • Methods to reduce this performance loss include CSMA/CD and CSMA/CA

Excess Broadcast Traffic

  • This means having more data on the network than it was designed for.
  • Excess means having too much and broadcast traffic means data on the network.
  • An example in a school of excess broadcast traffic is if all the students in the school all watched a different youtube video at the same time.

 

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