Computer Scicence

Computer Scicence

1. System Architecture

   • the purpose of the CPU
   • Von Neumann architecture:
   • common CPU components and their function:
   • the function of the CPU as fetch and execute instructions stored in memory
   • embedded systems:

2. Memory

   • the difference between RAM and ROM
   • the purpose of ROM in a computer system
   • the purpose of RAM in a computer system
   • the need for virtual memory
   • flash memory.

3. Storgae

   • the need for secondary storage
   • data capacity and calculation of data capacity requirements
   • common types of storage:
   • suitable storage devices and storage media for a given application, and the advantages and disadvantages of these, using characteristics

4. Wired and wireless networks

   • types of networks
   • factors that affect the performance of networks
   • the different roles of computers in a client-server and a peer-to-peer network
   • the hardware needed to connect stand-alone computers into a Local Area Network:
   • the internet as a worldwide collection of computer networks:
   • the concept of virtual networks.

5. Network topologies, protocols and layers

   • star and mesh network topologies
   • Wifi:
   • ethernet
   • the uses of IP addressing, MAC addressing, and protocols including
   • the concept of layers
   • packet switching.

6. System security

   • forms of attack
   • threats posed to networks:
   • identifying and preventing vulnerabilities:

7. Systems software

8. Ethical, legal, cultural and environmental concerns