topic 1

Question 1

Outline problems that may arise from the installation of new hardware and software in the office.

Answer 1

Users/employees might be afraid of these changes

Data migration problems;

Employee efficiency may drop;
As they learn to use the new system;

ssue of compatibility with legacy software/hardware;
So features of new software/hardware may not work correctly;

Question 2

Identify two possible compatibility issues as a part of data migration.

Answer 2

Language differences/different character set;

Different conventions of representing various data/currencies, dates, etc.;

Incompatible software/incompatible hardware;

Question 3

identify three consequences of inadequate testing.

Answer 3

software not meeting user requirements

Can lead to end user dissatisfaction;

Can lead to reduced (employee) productivity;

Can lead to decreased reliability of the organization;
Can lead to software which is not appropriate for the purpose

Question 4

describe the role of a router in this network.

Answer 4

controls the flow of data in the network;

inspects address of data packets;

directs to the appropriate network path

securely transmits data packets (across that path toward the intended destination);

Question 5

State the purpose of technical documentation provided with software.

Answer 5

Technical documentation explains how to install software;
Technical documentation describes the hardware configuration

Question 6

Describe one method by which systems requirements can be obtained from the stakeholders.

Answer 6

Interviews ‘
Direct observation

Question 7

Outline one reason for providing a prototype for this new system.

Answer 7

Allows stakeholders to gain an idea of how the system would be/work/look;

so they can provide feedback / suggest improvements;

Question 8

Define the term peripheral.

Answer 8

A piece of hardware device that is externally attached connected to the computer system

Question 9

Describe two possible causes of data loss.

Answer 9

Malicious activities;

Natural disasters

Malware/viruses/spyware/worms;

Human error;

Question 10

identify two features that could be used to improve the accessibility of the new user interface.

Answer 10

Touch screens;
Voice recognition;
Text-to-speech;
Braille keyboard
A colour-blind option
Large font option;

Question 11

Outline backup strategies that may be used to limit data loss.

Answer 11

off-site/cloud backup;

mirrored system ( duplicate copy to be used in the event the main system fails;)

Question 12

Outline reasons testing should take place at every stage of the development process.

Answer 12

To prevent the end user being dissatisfied with the final system;

Testing is important to enable early discovery of errors;

to reduce time delay/ using more resources / avoid higher cost;

Question 13

Identify two reasons why patches may be necessary for an operating system.

Answer 13

Allows bugs/error in operating system to be repaired;

Allows new features to be added to operating system

Allows compatibility issues to be improved;

Question 14

identify two methods that can be used to obtain these patches.

Answer 14

Automatic patches/updates sent (via internet);
User requested updates (via internet);
Patches sent on CD/DVD/memory stick;

Question 15

Define the term bit.

Answer 15

Binary digit;
OR
(Minimal) unit of storage that can be set to 0 or 1

Question 16

Name some application software

Answer 16

Word processors
* Spreadsheets
* Database Management Systems (DBMS)
* Email clients
* Web browsers
* Computer Aided Design (CAD)
* Graphic Processing Software

Question 17

how many characters can be store in 8 bits

Answer 17

2^8 or 256

Question 18

state why hexadecimal numbers are frequently used in computing.

Answer 18

Hexadecimal numbers are used for shorter representation of data because a (modern) byte can be represented exactly by two hexadecimal digits;

Question 19

State the number of bits used to represent a non-primary colour, such as yellow.

Answer 19

24

Question 20

State the maximum number of colours that can be represented in a computer pixel.

Answer 20

256 × 256 × 256

2^8^3

Question 21

State the function of the control unit (CU) in the central processing unit (CPU).

Answer 21

It decodes the instructions and controls all the other internal components of the CPU to make it work;

Question 22

State the purpose of persistent storage on the computers.

Answer 22

To store programs / files / data in a non-volatile device so it isn’t lost;
Stores more data as it has a larger capacity;

Question 23

define Microprocessor

Answer 23

an integrated circuit that contains
all the functions of a central processing unit of a
computer