Course curriculum

  • 1

    Types of Networks

    • Definitions of LAN, WAN and the distinction between them

    • Advantages and disadvantages of networking in general compared with stand-alone systems

    • Advantages and disadvantages of networking in a particular situation

    • Definition of Bandwidth. Importance of bandwidth

    • Open Systems Interconnection (OSI)

  • 2

    LAN

    • Network topologies – Star, Bus, Ring, peer-peer

    • Advantages and disadvantages of each of the main types of network

    • Factors affecting speeds of networks

    • How signals are passed and controlled in each of the network types

    • The client-server

  • 3

    WAN

    • Analogue and digital signals. Roles of the modem and multiplexer. Time Division Multiplexing (TDM). Frequency Division Multiplexing (FDM). ISDN

    • Polling individual workstations

    • Switching techniques – circuit, message, packet

    • EDI. Uses made by business. Advantages compared with traditional communications

    • EFT. Uses made by business. Advantages compared with traditional payment methods

    • ATM usage by banks. The sequence of events WITHIN THE COMPUTER for a successful transaction in TECHNICAL terms

  • 4

    Internet

    • Its origins

    • Business use of internet

    • Uniform Resource Locators (URL). Domain name. Domain name suffix. IP address

    • Components of the Internet. WWW. E-mail, File Transfer Protocol Servers, News

    • Use of internet by individuals

    • Use of internet by business and organisations

    • Setting up your own domain name

    • Search engines. Structuring queries to eliminate irrelevant information

    • Cookies

    • Affects on society – good and bad

  • 5

    E-Mail

    • Registering for e-mail and logging on

    • The e-mail system as seen by the user

    • How to send and receive e-mail. Attachments

    • Options open to the user on receiving an e-mail message

  • 6

    Hypertext Markup Language (HTML) and JAVAscript

    • Purpose of the HTML language

    • Format of the HTML language

    • Simple web pages in HTML

    • Javascript. Applets. Simple examples

  • 7

    Data transfers

    • Hypertext Transfer Protocol (HTTP)

    • File transfer Protocol (FTP)

    • Transmission Control Protocol (TCP)

    • JPEG, MPEG formats

  • 8

    Control of a network and its security

    • Role of the network supervisor/manager

    • Password systems. Allocation of passwords. Levels of access

    • Network threats. Viruses and their control

    • Hacking. Firewall

    • Encryption. Public key encryption