JAMB Computer Science Past Questions & Answers - Page 37

181.

CPU stands for ________________

A.

Control Processing Unit

B.

Computer Process Unit

C.

Central Personal Unit

D.

Central Processing Unit

Correct answer is D

CPU stands for Central Processing Unit

182.

The actual physical network of wires, cables and satellite that connects computers and resources throughout the world is the _______________

A.

Web

B.

Internet

C.

e-commerce

D.

social media

Correct answer is B

The Internet (or internet)is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices

183.

What is considered the brain of the computer?

A.

Central Processing Unit

B.

Monitor/Display Screen

C.

Mouse

D.

Printer

Correct answer is A

The CPU is the brain of a computer, containing all the circuitry needed to process input, store data, and output results.
The CPU is constantly following instructions of computer programs that tell it which data to process and how to process it. Without a CPU, we could not run programs on a computer

184.

Hexadecimal numbers are a mixture of

A.

Octal and decimal numbers

B.

Binary and octal numbers

C.

Letters and decimal digits

D.

Binary and decimal numbers

Correct answer is C

The hexadecimal number system is described as a 16 digit number representation of numbers from 0 - 9 (decimal digits) and digits from A - F (letters)

185.

Programming language COBOL works best for use in

A.

Siemens applications

B.

student applications

C.

social applications

D.

commercial application

Correct answer is D

COBOL, in full Common Business-Oriented Language, high-level computer programming language, one of the first widely used languages and for many years the most popular language in the business community