Describe two methods used to assist in finding program errors.
Differentiate between logical and physical network topology
Physical topology - the physical arrangement of nodes of a computer network
Examples
Logical topology- the way data flows in a network
Examples
Describe how ICT is used in marketing
State the name of the storage space used by the operating system when there is insufficient RAM
State three advantages of biometric authentication
Describe the principles of operation of laser printers and describe how they are applied in real-life scenarios
Steps
What is an Operating System?
Distinguish between a file and a folder
A file is a collection of related data given a unique name while a folder is named storage location on a storage media that contains related files
State three categories Operating Systems grouped according to user interface
What is a utility software?
The following are some of the possible definitions:
It is system software designed to help the users to analyse, configure, optimize, or maintain a computer
System software that helps maintain the proper and smooth functioning of a computer system
Examples include antivirus software, Disk clean-up tools, disk defragmenters, backup software, etc
Explain a situation when each of the following Desktop Publishing programs features may be used when creating a document
(i) Crop - used when handling a graphic and there is a need to remove some of the portions in the graphic
(ii)Transparency - used when there is a need to make background of a graphic visible
Distinguish between real time processing and interactive processing
Name one item used in the home, other than a computer, that contains a microprocessor.
Identify and describe four roles of the operating system when managing the resources of a personal computer.
Manages memory (RAM)
Ensures programs/data do not corrupt each other
Manages processes
Allows the user to run programs
Other roles
Describe two desirable features to look for in a laptop rather than a desktop computer.
– lightweight
– long battery life
– cool running processor
– touch pad
– internal webcam
What are the functions of the system clock in the CPU?
Define the term multimedia
Peter has installed internet on his home computer in order to use it for browsing. State three ways in which he would prevent viruses from infecting his computer. (3 marks)
Describe the purpose of the
(i) control unit
(ii) memory unit
(iii) arithmetic logic unit
in a computer.
i) To manage the execution of instructions
By running a clock
To decode instructions
(ii) To store OS
To store those parts of applications programs currently running
To store data currently in use
(iii) Part of the processor where data is processed/manipulated
All I/O must pass through here