AS/A level - Computer Science - Chapter 2-Communication

Students should be able to:
Roles of the different computers within the network and subnetwork models Benefits and drawbacks of each model Justify the use of a model for a given situation
Understand how packets are transmitted between two hosts for a given topology
Justify the use of a topology for a given situation
Including the use of public and private clouds.
Benefits and drawbacks of cloud computing
Describe the characteristics of copper cable, fibreoptic cable, radio waves (including WiFi), microwaves, satellites Including switch, server, Network Interface Card (NIC), Wireless Network Interface Card (WNIC), Wireless Access Points (WAP), cables, bridge, repeater Including Carrier Sense Multiple Access / Collision Detection (CSMA / CD) Methods of bit streaming, i.e. real-time and
on-demand Importance of bit rates / broadband speed on bit streaming
Including modems, PSTN (Public Switched Telephone Network), dedicated lines, cell phone network
• format of an IP address including IPv4 and IPv6
• use of subnetting in a network
• how an IP address is associated with a device on a network
• difference between a public IP address and a private IP address and the implications for security
• difference between a static IP address and a dynamic IP address