前端界面库展示

Appearance

Communication ​

2.1 Networks including the internet ​

Candidates should be able to:

  1. Show understanding of the purpose and benefits of networking devices

  2. Show understanding of the characteristics of a LAN (local area network) and a WAN (wide area network)

  3. Explain the client-server and peer-to-peer models of networked computers

    Notes and guidance

    1. Roles of the different computers within the network and subnetwork models
    2. Benefits and drawbacks of each model
    3. Justify the use of a model for a given situation

  4. Show understanding of thin-client and thick-client and the differences between them

  5. Show understanding of the bus, star, mesh and hybrid topologies

    Notes and guidance

    1. Understand how packets are transmitted between two hosts for a given topology
    2. Justify the use of a topology for a given situation

  6. Show understanding of cloud computing Show understanding of the differences between and implications of the use of wireless and wired networks

    Notes and guidance

    1. Describe the characteristics of copper cable, fibre-optic cable, radio waves (including WiFi), microwaves, satellites

  7. Describe the hardware that is used to support a LAN

    Notes and guidance

    1. Including switch, server, Network Interface Card (NIC), Wireless Network Interface Card (WNIC), Wireless Access Points (WAP), cables,bridge, repeater

  8. Describe the role and function of a router in a network

  9. Show understanding of Ethernet and how collisions are detected and avoided

    Notes and guidance

    1. Including Carrier Sense Multiple Access/Collision Detection (CSMA/CD)

  10. Show understanding of bit streaming

    Notes and guidance

    1. Methods of bit streaming, i.e. real-time and on-demand
    2. Importance of bit rates broadband speed on bit streaming

  11. Show understanding of the differences between the World Wide Web (WWW) and the internet

  12. Describe the hardware that is used to support the internet

    Notes and guidance

    1. Including modems, PSTN (Public Switched Telephone Network), dedicated lines, cell phone network

  13. Explain the use of IP addresses in the transmission of data over the internet

    Notes and guidance

    Including:

    1. format of an IP address including IPv4 and IPv6
    2. use of subnetting in a network
    3. how an IP address is associated with a device on a network
    4. difference between a public IP address and a private IP address and the implications for security
    5. difference between a static IP address and a dynamic IP address

  14. Explain how a Uniform Resource Locator (URL) is used to locate a resource on the World Wide Web (WWW) and the role of the Domain Name Service (DNS)