Computer studies analysis of questions and answers

State the meaning of the term computer software.

14/1/2021

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State the meaning of the term computer software.

Computer software

It is a set of programs written in a computer language to direct a computer on how to perform a particular task or behave in a certain way.

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List two techniques of acquiring electronic images to be used in a desktop publishing program.

10/1/2021

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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:

Scanning;
Picture capture via camera;
downloading;
getting from secondary storage.

(ii) Layout guides

Ruler guides: a ruler on the edges of the page that guides a user to position objects and resize them;
Margin guides: used to define page margins so that the user will be prevented from placing objects in non-printable areas of the page;
Column guides: Vertical lines used to divide a page into two or more columns;
Row guides: Lines used to divide a publication page into two or more section to help structure the layout;
Snap points: Positions on the screen where the object is stuck on.

(b) Ways of ensuring accuracy of data during data processing

Data is stored in secondary storage in such a way that access to it is controlled.
Encrypting of data before it is transmitted to minimize chances of it being compromised during transmission.
Use of validation methods to ensure that data is correct at the point of input.
Use of direct data capture methods which eliminates human errors.
Use of verification methods.

(c) (i) Output device: A plotter because it prints large size drawings to high precision.
(ii) A CAD software because it facilitates in the design of engineering drawings.

(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.

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List the two categories of system software.

6/1/2021

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List the two categories of system software.

Categories of system software

Firmware;
Networking software;
Operating system;
Utilities.

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State three reasons why an organisation may opt to develop its own software in-house rather than buy off-the-shelf software.

6/1/2021

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State three reasons why an organisation may opt to develop its own software in-house rather than buy off-the-shelf software.

Customised to suit business needs of the organisation.
It can be upgraded as needed by the organisation.
The organisation can have a module that the competitors don’t have.
The organisation develops only the modules needed/memory eptimization, or storage/space.

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Differentiate between hardware and software portability.

4/1/2021

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Differentiate between hardware and software portability.

Hardware portability refers to the ease of moving hardware from one location to another while
Software portability refers to the ability of running software on different platforms/models hardware/computers

(b) State two disadvantages of CD-ROM over magnetic disks.

Disadvantages of CD ROM over magnetic disks

Fairly fragile - easy to break or scratch than magnetic disks.
Smaller storage capacity than a hard disk.
CD ROM have a slower data access time compared to magnetic disks.
Takes time to save/write data than magnetic disk.
CD ROM not re-writable.

Differentiate between hardware and software portability.

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State the importance of considering the following factors when acquiring a software; warranty and portability.

4/1/2021

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State the importance of considering the following factors when acquiring a software; warranty;and portability.

(a) Warranty: If a software has a problem then it can be replaced.
If not working can be returned for repair.
(b) Portability: To ascertain the compatibility with other systems.

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What is utility software

1/1/2021

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(a) What is utility software

these are system programs that provide a useful service to the user of the computer by proving facilities for performing tasks of a routine nature

(b) Give four examples of utility software

Sort
Editors
File copying
File maintenance
Disk managers
CHKDSK
DEFRAG
SCANDISK

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A company has decided to computerize their operations. They have decided to purchase packages instead of developing their own programs. Give three advantages and two disadvantages of this approach.

31/12/2020

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(a) A company has decided to computerize their operations. They have decided to purchase packages instead of developing their own programs. Give three advantages and two disadvantages of this approach.

Advantages

Saves on programming effort and exposure on the part of the user (client)
The user gets a well- tried and tested program
Relatively quick implementation results from use of package

Disadvantages

Purchaser does not have full control over the packages as would have been if it was developed in house
Package is produced to meet general needs & may not be ideal for a particular customer

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Define the term Computer Aided Design.

30/12/2020

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Define the term Computer Aided Design.

CAB:- A system of programs and workstations used in designing engineering, architectural and scientific models ranging from simple tools to building, aircraft, integrated circuits and molecules.

(b) List three advantages of using Computer Aided Design.

The length of time taken to draw a design is reduced
Easier to make changes or update the original design.
Duplicates of the design are easy to produce, distribute to various interested parties.
It is easy to view the end product before it is designed

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What is meant by freeware?

30/12/2020

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What is meant by freeware?

Software that is available free of charge.

(b) State two ways of acquiring freeware.

Downloaded from the internet.
Donation from others.
From a developer.

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A firm intends to purchase new software. List three items that should accompany the software

26/12/2020

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(a) A firm intends to purchase new software. List three items that should accompany the software (3mks)

Installation guide
Service/ maintenance contract
A reference Manual (Documentation)
A license
A user guide
Training

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Distinguish between system software and application software.

26/12/2020

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Differences between system software and application software

System Software

Unix OS is an example of system software

System software refers to a set of instructions/codes/programs/applications designed to control hardware resources of a computer, performance, communications and manufacturer’s settings.

They also act as an interface between the user of application software and hardware resources. Examples include:

firmware,
utility software,
networking software and
operating systems.

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Differentiate between the hardware and software components off a computer giving an example of each

21/12/2020

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Differentiate between the hardware and software components off a computer giving an example of each

Hardware
these are the physical parts of a computer e.g. Mouse, keyboard
hardware is tangible
Software
these are the computer programs/ Instructions in a computer e.g Ubuntu, Windows, Chrome
software is intangible

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State the meaning of the term computer software.

List two techniques of acquiring electronic images to be used in a desktop publishing program.

List the two categories of system software.

State three reasons why an organisation may opt to develop its own software in-house rather than buy off-the-shelf software.

Differentiate between hardware and software portability.

(b) State two disadvantages of CD-ROM over magnetic disks.

State the importance of considering the following factors when acquiring a software; warranty;and portability.

​(a) What is utility software

​(b) Give four examples of utility software

​(a) A company has decided to computerize their operations. They have decided to purchase packages instead of developing their own programs. Give three advantages and two disadvantages of this approach.

Define the term Computer Aided Design.

(b) List three advantages of using Computer Aided Design.

What is meant by freeware?

​(b) State two ways of acquiring freeware.

(a) A firm intends to purchase new software. List three items that should accompany the software (3mks)

Differences between system software and application software

System Software

​Differentiate between the hardware and software components off a computer giving an example of each

Categories

Archives

(a) What is utility software

(b) Give four examples of utility software

(a) A company has decided to computerize their operations. They have decided to purchase packages instead of developing their own programs. Give three advantages and two disadvantages of this approach.

(b) State two ways of acquiring freeware.

Differentiate between the hardware and software components off a computer giving an example of each