JAMB Computer Science Past Questions & Answers - Page 45

221.

What is a computer file.

A.

A computer program

B.

A document like bunch of text

C.

A place on a computer where information is stored in a package

D.

A physical paper document that entails how a computer works

Correct answer is C

A computer file is a computer resource for recording data in a computer storage device, primarily identified by its file name

222.

In the files, if order of operation on two or more files are similar, then operation will be

A.

complex

B.

simple

C.

sequential

D.

combinational

Correct answer is C

The operation will be simple in this case

223.

CRACKING comes under ___________

A.

website service

B.

transcription

C.

computer crime

D.

data security

Correct answer is C

Computer crime. It is the use of a computer as an instrument to further illegal ends. Such as committing fraud, trafficking in child pornography, cracking etc

224.

Encryption helps with what?

A.

Spam messages

B.

identify source of message

C.

Safe delivery of messages to destination without being accessed by a third party

D.

interpretation of message and digital data

Correct answer is C

Encryption deals with the safe transfer of data of information from its source to its destinations, without a third party having access to the information or data being transferred

225.

In any software package, which of the following versions represents a major improvement on the previous version?

A.

1.0

B.

1.5

C.

2.0

D.

2.5

Correct answer is C

Windows 2.0 allowed application windows to overlap each other, unlike its predecessor Windows 1.0, which could display only tiled windows. Windows 2.0 also introduced more sophisticated keyboard-shortcuts and the terminology of "Minimize" and "Maximize", as opposed to "Iconize" and "Zoom" in Windows 1.0. It was also the last version of Windows that did not require a hard disk.

With the improved speed, reliability and usability, computers now started becoming a part of daily life for some workers. Desktop icons and use of keyboard shortcuts helped to speed up work.