JAMB Computer Science Past Questions & Answers - Page 18

86.

_________ are programmes that affect the effectiveness of a computer system

A.

bugs

B.

virus

C.

antivirus

D.

none of the above

Correct answer is B

Virus is a piece of code which is capable of copying itself and typically has a detrimental effect, such as corrupting the system or destroying data

87.

What does ICT stand for?

A.

information and community technology

B.

Internet and communication technology

C.

information and communication technology

D.

Internet access communication technologies

Correct answer is C

ICT means Information and Communications Technology

88.

Computers that are portable and convenient for users who travel are known as _________________

A.

Super computers

B.

Laptops

C.

Mini computers

D.

File servers

Correct answer is C

A laptop computer is a personal computer for mobile use. It has most of the same components as a desktop computer, including a display, a keyboard, a pointing device such as a touchpad (also known as a trackpad) and/or a pointing stick, and speakers into a single unit. A laptop is powered by mains electricity via an AC adapter, and can be used away from an outlet using a rechargeable battery. Laptops are also sometimes called notebook computers, notebooks, ultrabooks or netbooks. This could also be referred to as portable computers as they are easy to carry around

89.

What kind of data is processed by an analog computer?

A.

Discrete data

B.

Intermittent

C.

Discretely varying

D.

Continuously varying data

Correct answer is D

An analog computer is the one which is used to process continuously varying data. This changeable yet continuous data is generally referred to as the analog data

90.

What is the major purpose of application software?

A.

oversee the running of the computer

B.

utilities

C.

database management

D.

recreation

Correct answer is B

The major function performed by all application software is to allow the user utilize it in a particular area. Be it security, research, gaming, etc