Networks

Networks

Candidates should be able to:
  • explain the advantages of networking stand-alone computers into a local area network
  • describe the hardware needed to connect stand-alone computers into a local area network, including hub/switches, wireless access points
  • explain the different roles of computers in a client-server and a peer-to-peer network
  • describe, using diagrams or otherwise, the ring, bus and star network topologies
  • describe the differences between a local area network and a wide area network such as the Internet
  • explain the terms IP addressing, MAC addressing, packet and protocols
  • explain the need for security measures in networks, such as user access levels, suitable passwords and encryption techniques
  • describe and justify network policies such as acceptable use, disaster recovery, failover, back up, archiving.

The Internet

Candidates should be able to:
  • describe the nature of the Internet as a worldwide collection of computer networks
  • describe the hardware needed to connect to the Internet including modems, routers etc
  • explain the need for IP addressing of resources on the Internet and how this can be facilitated by the role of DNS servers
  • explain the importance of HTML and its derivatives as a standard for the creation of web pages
  • describe common file standards associated with the Internet such as JPG, GIF, PDF, MP3, MPEG
  • explain the importance of compressing files that are transmitted via the Internet
  • describe the differences between lossy and lossless compression.

Revision Extras

Internet Quiz - multiple choice Lossy compression - gap fill exercise Compression - multiple choice File Types - matching exercise