ict

Question 1

Consistency check

Answer 1

Checks if fields correspond (tie up) with each other

Question 2

Data type check

Answer 2

Data being entered needs should be of the same type as the data type specified

Question 3

Format check

Answer 3

Performed on codes to make sure that they are the correct combinations of characters

Question 4

Length check

Answer 4

Checks if the input data contains the required number of characters

Question 5

Presence check

Answer 5

Checks if data is actually present and hasn’t been missed out

Question 6

Range check

Answer 6

Checks whether numerical data is within given / acceptable values

Question 7

Direct Changeover

Answer 7

The old system is stopped overnight and the new system is introduced immediately.

Question 8

Parallel Running

Answer 8

The old and the new systems are run side by side for a time before the new system takes over altogether.

Question 9

Pilot Implementation

Answer 9

The new system is introduced into one part of the company (eg into a warehouse of a supermarket) and its performance assessed.

Question 10

Phased Implementation

Answer 10

Initially, only part of the new system is introduced. Only when it proves to work satisfactorily is the next part introduced, and so on, until the old system is fully replaced.

Question 11

This is when to use Direct Changeover

Answer 11

A small organisation which can afford to lose data/where system needs to be up and running very quickly/where the new system has been thoroughly tested

Question 12

This is when to use Parallel Running

Answer 12

An organisation with large amounts of data which would take too long to re-enter / cannot afford to lose data/where time taken/cost to implement is not an issue/where the new system needs to be thoroughly tested

Question 13

This is when to use Pilot Implementation

Answer 13

An organisation where there are clearly defined separate processes/where the new system needs to be thoroughly tested

Question 14

This is when to use Phased Implementation

Answer 14

An organisation where there are several branches all doing the same work)/where the new system needs to be thoroughly tested

Question 15

Examples of User Documentation

Answer 15

Error handling / meaning of errors, How to add, delete or amend records, How to do a search, Troubleshooting Guide/FAQs

Question 16

Examples of Technical Documentation

Answer 16

File structures, Known bugs in the system, Programming language used

Question 17

Analysis

Answer 17

First stage of the system life cycle

Question 18

Design

Answer 18

Second stage of the system life cycle

Question 19

Development & Testing

Answer 19

Third stage of the system life cycle

Question 20

Implementation

Answer 20

Fourth stage of the system life cycle

Question 21

Documentation

Answer 21

Fifth stage of the system life cycle

Question 22

Evaluation

Answer 22

Final stage of the system life cycle

Question 23

Evaluation methods

Answer 23

looking at the efficiency, ease of use and appropriateness of the solution.

Question 24

Evaluation strategies

Answer 24

Comparing the solution with the original requirements, Identifying any limitations and necessary improvements

Question 25

Post evaluation actions

Answer 25

Update of hardware and software due to feedback from users, new hardware available, changes in legislation

Question 26

Testing Designs

Answer 26

describe how data/file structures, validation, input and output methods are created and tested

Question 27

Visual Verification

Answer 27

Human carefully compares what has been entered with data source (application form / order etc)

Question 28

Double Data Entry

Answer 28

Data source entered into the computer twice, and only if the two sets are identical will they be accepted for processing (Computer checks)

Question 29

Validation

Answer 29

Routines try to ensure data going into the system is reasonable

Question 30

Verification

Answer 30

Methods to ensure that the data entered into the systems is copied accurately from the source

Question 31

Observation

Answer 31

Watching personnel using the existing system to find out exactly how it works

Question 32

Questionnaires

Answer 32

Distributing {these things} to the workforce, clients or users to find out their views

Question 33

Interviews

Answer 33

A one-to-one question and answer session between the analyst and employee

Question 34

Examining existing paperwork

Answer 34

Allows analysis to see how paper files are kept to

Question 35

Data flow diagram

Answer 35

shows the flows of data, input and output requirements with processing and types of data storage neede