JAMB Computer Science Past Questions & Answers - Page 45

221.

The explorer bar is divided into _________ categories.

A.

2

B.

3

C.

5

D.

7

Correct answer is B

The explore bar is divided into three categories

222.

Which of the following is not a model used in problem solving?

A.

critical thinking

B.

SDCL

C.

waterfall

D.

prototype

Correct answer is C

Waterfall is not a model used in solving problems

223.

The delete permission allows one to ____________

A.

share music

B.

delete or remove files and directories

C.

read files and directories

D.

modify files and directories

Correct answer is B

Delete or remove files.
You can delete a permission that is associated with a user account. When you delete a permission, you remove it from use for all user accounts

224.

__________________ is the conversion of computer data from one format to another.

A.

data conversion

B.

data implementation

C.

data transmission

D.

data transfer

Correct answer is A

Data conversion is the process of translating data from one format to another

225.

How are the stages of SDLC implemented?

A.

Randomly, without overlapping

B.

sequentially, without overlapping

C.

sequentially with overlapping

D.

randomly with overlapping

Correct answer is B

the stages of SDLC are executed sequentially in order to ensure it goes accordingly. Also, they must be done sequential to gets results from previous stages to know what to improve in later stages. Also it does not overlap because, a stage must be concluded before another proceeds