2021 Computer Science WAEC Objective Past Questions

Quantitative data can exist in

Data created by the user is called

The sequence of operation of a computer is

Which of the following descriptions is not true about data? It

Which of the following statements is true about supercomputers? They

The Slide Rule is accurate to

What factors will motivate a field engineer into choosing a notebook computer over a desktop computer?

A collection of wires through which data are transmitted from one part of the computer to another is known as

The total possible combinations of the input variables for a logic gate containing three input variables is

What is the least number of 750MB capacity CD-ROM discs needed to transfer 10GB size file?

The logic gate represented in Figure 1 is called

Use the logic gate in Figure 2 to answer question 12

Which of the logic gates will give an output opposite to the input state?

Use the logic gate in Figure 2 to answer question 13

Which of the following statements is true about the logic gates X and Y?

The logic equation for the logic circuit in Figure 3 is

The operation of a computer and peripherals attached to it is controlled by

COBOL  was developed for

The operating system performs the following operations except

The fundamental purpose in BIOS is

The IF…THEN statement in BASIC is called

The use of natural language and symbols to write instructions for the computer is called

Which of the following stages of the SDLC is post operational stage?

The expression 5 + 3*4/2-3^2 in QBASIC evaluate to

Use figure 4 to answer questions 23 

The basic problem with the flowchart is that it has

Use figure 4 to answer questions 24

What activity is the flowchart made to represent?

Use figure 4 to answer questions 25

If N in the flowchart is represented by 10, which of the following conditions is not true?

A computer system on the network that stores pages, takes requests from clients as well as send out information is called a

The device in Figure 5 uses a transmission method called

In Figure 6, the signals from modem X to modem Y is

The “/exams” in the web address: https://www.waec.org.ng/exams is called

Which of the following statements about URL is true? It is

The type of network represented in Figure 7 is called

In MS Excel, the cell that contains the pointer or cursor is called

The part of the graphic interface in Figure 8 labelled V is called

The Figure 2, in the number 1101₂ is indicated in MS Word using a feature called

The part of the MS Access interface labeled X in Figure 9 is called

Which of the following formulas will display the current second past the minute of the clock in MS Excel?

The part of the MS Word interface labeled II in Figure 10 is called

What type of relationship can you deduce from the statement a department has many employees?

The screen background where icons and windows are displayed in GUI is called

The windows shortcut key for closing an active application is

Changing the default settings or appearance of the Taskbar in windows by a user is known as

The part of the computer system shown in Figure 11 is used to

A single character in an EBCDIC encoding system can be represented using

Evaluate 10011₂ – 1111₂

The binary number 0.1101 in decimal is

To prevent unforeseen data loss, a user must

The file access method shown in Figure 12 is called

Which of the following options is not a similarity between computer file and manual file? Both can

A computer program that gathers information about a person or organization without their knowledge or consent is known as

The following actions are the effects of virus infection in a system except