Computing Assessment

Computing Assessment

1. Computing Components

   • CPU
     • To fetch, decode and execute instructions
   • Clock Speeds (Hertz, Kilohertz, Megahertz, Gigahertz)
   • What is meant by a dual or quad core processor
     • Dual core has to proccessors working simultaniously
     • Quad core has 4 proccessors working simultaniously
   • Hard Drive
     • To store all files and programs of the user.
   • RAM
     • Allows data to be accessed.

2. Operating Systems

   • Multi-Tasking
     • Running 2 or more programs simualtaniously
   • Memory Managment
     • Managing Computer Memory
   • Pheripheral Management
     • Sticky Keys, Volume/Balence of Speakers
   • Security
     • Passwords, Logins and Accounts
   • User Interface
     • The user and a computer system interact.
   • File Management
     • Provides user interface to manage files an folders

3. Software Types

   • Open Source
     • Comes with source code
   • Probprietry
     • Does not come with source code
   • Custom Written
     • Custom made specifically for the client
   • Off the shelf
     • Avalible for anyone to aqiure

4. Networking

   • LAN
     • Local Area Network
   • WAN
     • Wide Area Network
   • IP Address
     • Internet Protocal
   • MAC Address
     • Media Access Control
   • Star Networks
   • Peer to Peer Networks

5. Data Validation

   • Data Types
     • String (Any characters)
     • Integer (Whole numbers)
     • Real (Decimal numbers)
     • Boolean (True/False)
   • Validation Techniques
     • Presence check
     • List check
     • Range check
     • Field length check
     • Input mask
     • Type check