Describe the term portability as used in the following context.Hardware
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![]() PETER USED A COMPACT DISK RECORDABLE TO SAVE HIS WORK. ½ OF THE DISK WAS USED TO STORE VIDEO FILES WHILE ¼ OF THE REMAINDER WAS TO SAVE AUDIO FILE. NOTE THAT CD-RECORDABLE IS 700MB. CALCULATE THE REMAINING SPACE IN BYTES.Video =0.5 x 700= 350 …………………… ½ mark
Audio = 0.125 x 700=87.5 ………………… ½ mark Total = 437.7 …………………… 1mark Remaining spaces (700-437.5) = 262.5MB ………… 1mark ![]()
EXPECTED RESPONSE
![]() List three uses of DVDs. (3mks)
![]() Define portability as used in software selection. (1mk)
Portability refers to whether a program can be copied or installed in more than one computer
List four ways of acquiring software in an organization. (2mks)
![]() Differentiate between a line printer and a page printer as used in computers. (2 marks)
A line printer is an impact printer that prints one entire line of text at a time
while a page printer is a non impact printer that prints a Whole page at a timer ![]() Explain two problems associated with the computer hard disk.
Problems of computer hard disk
![]() Describe each of the following computer cables: Parallel cable and Serial cable;
Description of computer cables
a) Parallel cable
![]() The management of an organisation intends to purchase a printer. State three factors that they should consider during the purchase
Factors to consider when purchasing a printer
![]() State the meaning of the term computer software.
Computer software
![]() Explain three ways in which an operating system provides data security in a computer system14/1/2021 Explain three ways in which an operating system provides data security in a computer system
Access control:
(b)State two instances where observation is not a viable method of gathering data during system analysis stage.
I. repeater
I. Identify the component labelled P.
![]() Explain two health issues that could arise from the use of unsuitable computer desk.
(i)Name two devices that may be used for storing data for a long duration.
![]() State the functions of each of the following keys on the computer keyboard:
(a) backspace;
![]() State the meaning of the term disk defragmentation as used in computers.
(a) generating receipts where carbon copies are required;
(b)an architectural drawing where precision is required; (c) producing document output for a visually impaired person.
(a)Carbon copies - impact printers e.g. dot matrix.
(b)Architectural design - plotter (c)Visual impairment - speakers/brailles ![]() List two techniques of acquiring electronic images to be used in a desktop publishing program.10/1/2021 List two techniques of acquiring electronic images to be used in a desktop publishing program.
(ii) Describe two layout guides in a desktop publishing program (DTP) that assist a user to place an object in a preferred position.
(b) Explain three ways of ensuring that data submitted for processing is accurate. (c)An engineering company requires a computer system to design roads and bridges. Explain one suitable choice for: (i) output device; (ii) software.
RESPONSES
(a) (i) Ways of acquiring images in DTP:
(ii) A CAD software because it facilitates in the design of engineering drawings. ![]() |
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