WAEC - Computer Studies (2023)

• 1

  An advantage of bus topology over star topology is that

  回答

  (D)

  it requires less cable length than star topology
• 2

  The transmission method that allows data transmission to multiple computers on a network without addressing all the computers is called

  回答

  (B)

  broadcast
• 3

  The main distinguishing feature of fifth generation computers is

  回答

  (A)

  artificial intelligence.
• 4

  Machine language instruction codes are expressed in

  回答

  (D)

  binary
• 5

  A wait state of zero in hardware means the

  回答

  (D)

  processor and the memory are equally matched in speed.
• 6

  The following are effects of file insecurities except

  回答

  (B)

  data use.
• 7

  The commands used for adding comments in QBASIC programming is

  回答

  (B)

  REM
• 8

  Which of the following IP addresses can be used to access a locally running website on a user's computer?

  回答

  (B)

  127.0.0.1
• 9

  The BCD equivalent of 135 is

  回答

  (C)

  000100110101
• 10

  A good algorithm must be

  回答

  (D)

  concise and finite.
• 11

  The central processing unit consists of

  回答

  (C)

  control unit, arithmetic logic unit and primary storage.
• 12

  The technology used for first generation computers was

  回答

  (D)

  vacuum tubes.
• 13

  The LET statement in QBASIC

  回答

  (A)

  allows users to assign a value to a variable.
• 14

  The first attempt at using the punch card principle to do mathematical calculations led to the invention of

  回答

  (C)

  Charles Babbage Difference Engine
• 15

  The radix of hexadecimal number system is 

  回答

  (C)

  16
• 16

  A file organization in which the records are stored in the order in which they occur is called

  回答

  (C)

  sequential file.
• 17

  The process of converting data into information is known as data

  回答

  (B)

  processing
• 18

  A BIOS configuration program that allows a windows user to configure attributes such as password, time and date is called

  回答

  (C)

  CMOS setup.
• 19

  The software responsible for allocating and managing system resources is called

  回答

  (D)

  operating system.
• 20

  Which of the following commands can be used to switch between open window?

  回答

  (B)

  Alt + Tab
• 21

  During the booting process in Windows, the Master Boot Record is loaded by the

  回答

  (A)

  BIOS .
• 22

  The set of instructions used to solve specific user tasks is called

  回答

  (D)

  application software.
• 23

  Personalized form of letters which can be sent to many people can be achieved using

  回答

  (B)

  mail merge.
• 24

  An input device that converts an image into a text is known as

  回答

  (D)

  optical character reader.
• 25

  Which of the following QBASIC arithmetic operations is the last in order of precedence?

  回答

  (A)

  Subtraction
• 26

  The command used to seek for assistance in Microsoft disk operating system is

  回答

  (C)

  /?
• 27

  Which of the following is an example of information?

  回答

  (B)

  Average score of students in a test
• 28

  The usage of the keys CTRL + W in Ms Word

  回答

  (A)

  closes the current window.
• 29

  The speed of data transfer can be affected by the following factors except

  回答

  (B)

  broadband status.
• 30

  Which of the following data is alpha-numeric?

  回答

  (C)

  SS3
• 31

  The unit of the computer system that directs and supervises other units is called the

  回答

  (B)

  control unit.
• 32

  An opening on the motherboard of a system unit where expansion cards can be inserted is known as

  回答

  (D)

  expansion slot.
• 33

  Headers and footers are used in Microsoft Word documents to

  回答

  (B)

  allow text to appear at the top and bottom of every page.
• 34

  If today's date is 02/02/2008, what will be the result of typing "=today() - 1" in a cell of a spreadsheet?

  回答

  (A)

  02/01/2008
• 35

  The act of translating data into a secret code is known as

  回答

  (B)

  encryption.
• 36

  The https in the web address, https://waec.org.ng, is called a

  回答

  (B)

  protocol.
• 37

  The process of transferring a file from a server to a computer is called

  回答

  (C)

  downloading.
• 38

  The following are functions of database management system except

  回答

  (A)

  format operation.
• 39

  Input devices are computer devices that can

  回答

  (A)

  send data and instructions into the computer memory.
• 40

  Viruses, worms and Trojan horses are regarded as

  回答

  (B)

  malicious software.
• 41

  Which of the following actions is not an animation in Microsoft PowerPoint?

  回答

  (D)

  Dancing
• 42

  The database model that uses tables with columns and rows is called

  回答

  (B)

  relational database.
• 43

  Datatypes in QBASIC programming language include the following except

  回答

  (B)

  short
• 44

  A program that converts source code instructions in high-level programming language to object codes line by line is known as

  回答

  (A)

  interpreter.
• 45

  Stored instructions and data in digital computer consist of

  回答

  (A)

  bits.