2023 JAMB Computer Studies Past Questions & Answers

Question 1

What is the difference between internal and external modem

Accepted Answer

B. internal modems are PCI or ISA expansion cards while external modems are traditionally plug into a serial port on the computer.

Answer

A. external modems are PCI or ISA expansion cards while internal modems are traditionally plug into a serial port on the computer.

Answer

C. external modems are PCI or ISA expansion cards while internal modems are USB modems

Answer

D. they are PCI or ISA expansion cards

Question 2

Which of these criteria is not important while classifying files ?

Accepted Answer

C. Size of the file

Answer

A. Organization method

Answer

B. Nature of content in the file

Answer

D. Storage medium

Question 3

Which of these commands will reboot the computer ?

Accepted Answer

A. Ctrl + Alt + Del

Answer

B. Ctrl + Del

Answer

C. Ctrl + Alt + C

Answer

D. Ctrl + Alt

Question 4

Which of the following does not replicate itself in an infected computer?

Accepted Answer

C. trojan horse

Answer

A. spyware

Answer

B. worm

Answer

D. virus

Question 5

Which of the following is not a third generation language?

Accepted Answer

C. Assembly language

Answer

A. FORTRAN

Answer

B. COBOL

Answer

D. Basic

Question 6

Large computers are classified as

Accepted Answer

D. mainframe computers

Answer

A. desktops

Answer

B. micro computers

Answer

C. mini computers

Question 7

Which of the following is a valid variable name in Python?

Accepted Answer

B. my_variable

Answer

A. my_variable$

Answer

C. my-variable

Answer

D. 1my_variable

Question 8

A set of moral principles that regulate the use of computers is called

Accepted Answer

B. computer ethics

Answer

A. cyber security guidelines

Answer

C. computer safety laws

Answer

D. computer rules

Question 9

The process of finding and correcting errors in the program code is called ?

Accepted Answer

B. Debugging

Answer

A. testing

Answer

C. Editing

Answer

D. coding

Question 10

The only possible number base for 235$_x$ among the following is ?

Accepted Answer

D. 6

Answer

A. 3

Answer

B. 5

Answer

C. 4

Question 11

When the computer reboots itself without triggering the hardware based reset, it is called ?

Accepted Answer

D. soft reboot

Answer

A. cold booting

Answer

B. hard reboot

Answer

C. cold reboot

Question 12

Which of these application packages can be used to create a spreadsheet ?

Accepted Answer

B. Microsoft excel

Answer

A. Microsoft powerpoint

Answer

C. Macwrite

Answer

D. Microsoft word

Question 13

What generation of computer is characterized by the use of vacuum tubes for circuitry and magnetic drums for main memory?

Accepted Answer

C. first generation

Answer

A. second generation

Answer

B. fourth generation

Answer

D. third generation

Question 14

Which of the following is used for modulation and demodulation ?

Accepted Answer

C. Modem

Answer

A. Gateway

Answer

B. Protocol

Answer

D. Multiplex

Question 15

Translating the problem statement into a series of sequential steps describing what the program must do is known as

Accepted Answer

B. creating the algorithm

Answer

A. coding

Answer

C. debugging

Answer

D. writing documentation

Question 16

Which of the following is the standard keyboard layout ?

Accepted Answer

B. QWERTY

Answer

A. Dvorak

Answer

C. AZERTY

Answer

D. ABCD

Question 17

What is the function of the escape key ?

Accepted Answer

C. to interrupt or cancel the current process or running program

Answer

A. to shutdown the computer

Answer

B. to start an application

Answer

D. to delete a file/folder

Question 18

which communication channel allows the sending of information in one direction only?

Accepted Answer

A. simplex mode

Answer

B. half duplex mode

Answer

C. duplex mode

Answer

D. full duplex mode

Question 19

What does R stands for in the CRUD acronym ?

Accepted Answer

C. Read

Answer

A. Retrieve

Answer

B. Redirect

Answer

D. Relate

Question 20

In technical feasibility, the priority is ?

Accepted Answer

C. whether the problem can be solved using existing technology and resources available

Answer

A. whether the probolem can be solved in the user's environment

Answer

B. if the likely benefits outweight the cost of solving the problem

Answer

D. whether the problem can be solved without causing any social issues

Question 21

EDVAC was produced using which of these concepts ?

Accepted Answer

B. stored program

Answer

A. packet routing

Answer

C. circuit switching

Answer

D. packet switching

Question 22

Which of the following allows devices on one network to communicate with devices on another network ?

Accepted Answer

B. gateway

Answer

A. T-switch

Answer

C. modem

Answer

D. multiplexer

Question 23

A type of application software that combines the abilities of several general purpose applications in one program is ?

Accepted Answer

B. Integrated Packages

Answer

A. Graphics Packages

Answer

C. Multipurpose application

Answer

D. Database management packages

Question 24

Evaluate $1011_2 + 122_4$, leaving your answer in base 10.

Accepted Answer

A. 37

Answer

B. 51

Answer

C. 47

Answer

D. 73

Question 25

A set of programs that direct computers to perform specific information processing activities for end users is

Accepted Answer

C. Application software

Answer

A. System software

Answer

B. Operating System

Answer

D. Translators

Question 26

Who invented the Napier Bones

Accepted Answer

A. John Napier

Answer

B. Samuel Napier

Answer

C. Joseph Jacquard

Answer

D. Charles Babbage

Question 27

What part of the central processing unit coordinates other units and manages the computer resources ?

Accepted Answer

D. Control unit

Answer

A. coordinating unit

Answer

B. Memory unit

Answer

C. Arithmetic Logic unit

Question 28

A computer code that spreads without the user interaction and can cause network performance problem is

Accepted Answer

B. a computer worm

Answer

A. a trojan

Answer

C. a spyware

Answer

D. a computer virus

Question 29

The last cycle of data processing where data and information are preserved for future is called

Accepted Answer

C. storage

Answer

A. processing

Answer

B. recording

Answer

D. output

Question 30

Computers manipulate data in many ways, and this manipulation is called ?

Accepted Answer

C. processing

Answer

A. batching

Answer

B. utilizing

Answer

D. upgrading

Question 31

Which of the following is an example of graphics software ?

Accepted Answer

B. Adobe Illustrator

Answer

A. Microsoft word

Answer

C. Microsoft powerpoint

Answer

D. MS Access

Question 32

What is the shortcut for creating a new document ?

Accepted Answer

A. Ctrl + N

Answer

B. Ctrl + O

Answer

C. Ctrl + Q

Answer

D. Ctrl + M

Question 33

Using Boolean identities, reduce the given Boolean expression: A(A+1) + A(B+0) + C.1

Accepted Answer

D. A + C

Answer

A. A + B + C

Answer

B. A.B.C

Answer

C. A.B + C

Question 34

The first computer made available for commercial use was

Accepted Answer

A. UNIVAC

Answer

B. EDSAC

Answer

C. Mark-1

Answer

D. ENIAC

Question 35

The connection between two or more computers to share resources or allow electronic communication is called ?

Accepted Answer

D. Network

Answer

A. Connection

Answer

B. Communication

Answer

C. Transfer

Question 36

One of the following is not a good way to prevent virus.

Accepted Answer

C. carelessly exposing your vital and personal information

Answer

A. encryption

Answer

B. use of firewall

Answer

D. use of antivirus software

Question 37

Analog, digital and hybrid computers are classification of computers based on

Accepted Answer

A. the type of data-handling techniques

Answer

B. the purpose

Answer

C. the size

Answer

D. the functionality

Question 38

What is the difference between an assembler and a compiler ?

Accepted Answer

B. an assembler converts assembly level language code into machine language code while a compiler converts high level programming language code to a machine language code.

Answer

A. an assembler converts a machine language code into assembly level language code while a compiler converts high level programming language to a machine language code.

Answer

C. a compiler converts assembly level language code into machine lange while an assembler converts high level programming language to a machine language code.

Answer

D. they both convert assembly level language code into machine lange

Question 39

The type of database in which the data are connected in different files by using common data elements or a key field is ?

Accepted Answer

A. Relational database

Answer

B. Network database

Answer

C. Hierarchical database

Answer

D. Object-oriented database

Question 40

Which of the following is not an application software

Accepted Answer

C. Linux

Answer

A. MS - Word

Answer

B. Corel Draw

Answer

D. MacWrite

Question 41

The first step in a CPU instruction cycle is

Accepted Answer

C. Fetch

Answer

A. Decode

Answer

B. Get

Answer

D. Execute

Question 42

what is the first computing machine invented ?

Accepted Answer

D. Abacus

Answer

A. slide rule

Answer

B. Pascal calculator

Answer

C. Napier bones

Question 43

What is the shortcut for performing warm booting ?

Accepted Answer

D. by pressing the Ctrl + Alt + Del keys simultaneously

Answer

A. y pressing the Ctrl + Alt keys simultaneously

Answer

B. y pressing the Ctrl + Alt + F1 keys simultaneously

Answer

C. y pressing the Ctrl + Del keys simultaneously

Question 44

The term used to describe when new information replaces old information or data is

Accepted Answer

D. overwrite

Answer

A. file loss

Answer

B. delete

Answer

C. re-write

Question 45

The diagrammatic representation of an algorithm is

Accepted Answer

D. flowchart

Answer

A. pseudocodes

Answer

B. codes

Answer

C. graphics

Question 46

Which of these is not true about peer-to-peer network ?

Accepted Answer

B. it has a strong security system

Answer

A. there is no dedicated servers

Answer

C. all computers in this network are known as peers

Answer

D. there is no hierarchy among the computers

Question 47

In computer architecture, the type of bus that connects the major components of a computer system is

Accepted Answer

D. system bus

Answer

A. address

Answer

B. data bus

Answer

C. control bus

Question 48

Translators are type of ?

Accepted Answer

A. System software

Answer

B. Operating system

Answer

C. Utility programs

Answer

D. Application software

Question 49

Which of the following can be used to select the entire document ?

Accepted Answer

B. Ctrl + A

Answer

A. Ctrl + K

Answer

C. Shift + A

Answer

D. Alt + F5

Question 50

The closest computer language to human is ?

Accepted Answer

A. High level language

Answer

B. Low level language

Answer

C. Machine language

Answer

D. Assembly language

Question 51

Which of the following controls the way in which the computer system functions and provides a means by which users can interact with the computer.

Accepted Answer

C. operating system

Answer

A. CPU

Answer

B. application software

Answer

D. ALU

Question 52

___ is the type of computer that is designed to operate on two states, 0 and 1.

Accepted Answer

C. Digital computer

Answer

A. Analog computer

Answer

B. Hybrid computer

Answer

D. micro computer

Question 53

Which of the following is NOT a high-level programming language?

Accepted Answer

A. Assembly language

Answer

B. C++

Answer

C. Python

Answer

D. Java

Question 54

The computer that combines the functions of both analog and digital computers is called ?

Accepted Answer

C. Hybrid computer

Answer

A. Digital computer

Answer

B. Analog computer

Answer

D. multipurpose computer

Question 55

Which of the following components of the computer is referred to as the administrative section ?

Accepted Answer

A. CPU

Answer

B. Output unit

Answer

C. Input unit

Answer

D. Memory Unit

Question 56

When records are given a new value, it is called

Accepted Answer

A. updation

Answer

B. insertion

Answer

C. deletion

Answer

D. retrieval

Question 57

What protocol is used between Email servers?

Accepted Answer

A. SMTP

Answer

B. SNMP

Answer

C. FTP

Answer

D. POP

Question 58

What type of booting does the computer go through when starting up from a powered down ?

Accepted Answer

A. Cold booting

Answer

B. Soft booting

Answer

C. Warm booting

Answer

D. Rebooting

Question 59

The Output will be a HIGH for any case when one or more inputs are one for a(an)

Accepted Answer

A. OR gate

Answer

B. AND gate

Answer

C. NOR gate

Answer

D. NOT gate

Question 60

Which of the following monitors has only two colours

Accepted Answer

D. monochrome monitor

Answer

A. colour monitor

Answer

B. colour graphic adapter (CGA)

Answer

C. dichrome monitor

Question 61

The following are the methods of file security except

Accepted Answer

A. hacking

Answer

B. use of password

Answer

C. Use of back up

Answer

D. Use of Anti-virus

Question 62

The process where a programmer converts a program specifications into computer instructions is called ?

Accepted Answer

B. Coding

Answer

A. Debugging

Answer

C. Testing

Answer

D. System design

Question 63

The following are input devices except.

Accepted Answer

B. monitor

Answer

A. mouse

Answer

C. Keyboard

Answer

D. joystick

Question 64

What category of application package does microsoft excel belong to ?

Accepted Answer

D. Spreadsheet packages

Answer

A. Word processing package

Answer

B. Graphics packages

Answer

C. Database management packages

2023 JAMB Computer Studies Past Questions

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