WAEC Data Processing Past Questions & Answers - Page 16

76.

Corrective maintenance of software refers to

A.

Enhancement aimed at making the product faster

B.

Deploying the software to a different hardware platform

C.

Modifications initiated due to defects in software

D.

Making the software easier to understand

Correct answer is C

Corrective maintenance is concerned with fixing errors that are observed when the software is in use.

77.

Preventive maintenance measures in computer room do not include

A.

The use of tiles

B.

The use of rugs

C.

Good ventilation

D.

Proper illumination

Correct answer is B

Use of rugs is not a preventive maintenance measures

78.

Shared-memory is an architecture in

A.

Parallel database

B.

Trusted distributed database

C.

Relational database

D.

Distributed database

Correct answer is A

Shared-memory is the architectural model adopted by recent servers based on symmetric multiprocessors (SMP). It has been used by several parallel database system prototypes and products as it makes DBMS porting easy, using both inter-query and intra-query parallelism.

79.

The following statements are steps used in creating a new workbook in a Microsoft Excel application.
I. Click on New
II. Click on the Microsoft Office button
III. Choose blank document

Which of the following arrangements shows the correct order of operation from the steps above?

A.

I, II and III

B.

II, I and III

C.

II, III and I

D.

III, II and I

Correct answer is B

The steps used in creating a new workbook in a Microsoft Excel application
- Click on the Microsoft Office button
- Click on New
- Choose blank document

80.

The database tool that allows the user to select and filter data from multiple tables is referred to as

A.

Form

B.

Table

C.

Query

D.

Report

Correct answer is C

A query in a database is a request for information from a database management system (DBMS), which is the software program that maintains data. Users can make a query to retrieve data or change information in a database, such as adding or removing data.