WAEC SSCE - Computer Studies - 2022…

Question 1 Report

If A is in cell A1 and B is in Cell B1 of a worksheet in a spreadsheet application,write a formula to calculate

\[ x = \frac{A^2 = B^{1/2}}{100} \]

. ((A1^2)+(B1^(1/2)))/100 Correct answer

(A1^2)+(B1^(1/2)))/100

((A1^2+(B1^(1/2))/100

((A1^2)+(B1^(1/2)))/100

Answer Details

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Spreadsheet Package

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Question 2 Report

The program that is loaded into a special area on a microprocessor or ROM on a one-time basis and becomes part of the hardware is called?

firmware Correct answer

liveware

software

utility

Answer Details

The program that is loaded into a special area on a microprocessor or ROM on a one-time basis and becomes part of the hardware is called firmware. Firmware is a specific type of software that is embedded into hardware devices, such as microprocessors or other electronic components, to perform a specific function. Firmware is designed to be permanent and cannot be easily modified or updated like other software programs. It is often used in devices like routers, printers, and digital cameras, where it provides low-level control of the hardware and ensures that the device functions correctly.

Read lesson note on Central Processing Unit (WAEC)

Read lesson note on Memory Unit (WAEC)

Central Processing Unit

Memory Unit

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Question 3 Report

EDSAC was produced using a concept known as

Circuit switching

Packet routing

Packet switching

Stored program Correct answer

Answer Details

EDSAC was produced using a concept known as "Stored program". The stored program concept is a fundamental idea in computer science that refers to the ability of a computer to store instructions in memory along with data. This allows the computer to retrieve and execute those instructions at a later time, without the need for human intervention. Before the advent of the stored program concept, computers were programmed using hard-wired circuitry, which made them inflexible and difficult to reprogram. However, with the stored program concept, computers became much more versatile and easier to program, leading to the development of more sophisticated software and the modern computing era. EDSAC, which stands for Electronic Delay Storage Automatic Calculator, was one of the first computers to be built using the stored program concept. It was designed and built in the late 1940s and early 1950s at the University of Cambridge, and was used for scientific research and engineering calculations. Therefore, the correct answer to the question is "Stored program".

Read lesson note on History Of Computing (JAMB)

History Of Computing

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Question 4 Report

One function of operating system is ?

power supply allocation Correct answer

file corruption and deletion

flowcharting

resource allocation

Answer Details

Read lesson note on Operating System (WAEC)

Operating System

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Question 5 Report

Select two stages of booting from the following list:

i. Power on Self Test;

ii. Loading of Operating System;

iii. Loading of e-mails;

iv. Start in safe mode.

iv. Save all active files

I and II only Correct answer

I and III only

II and IV only

III and IV only

Answer Details

The correct answer is "I and II only". Booting refers to the process of starting up a computer system. During this process, the computer goes through several stages before the operating system is loaded and the user can begin using the computer. The first stage of booting is the Power on Self Test (POST), which checks the hardware components of the computer to make sure they are functioning properly. If any issues are detected during the POST, an error message will be displayed. The second stage of booting is the loading of the operating system. Once the hardware checks are completed, the computer loads the operating system from the hard drive or another storage device. Options III and IV are not stages of the booting process. Loading of emails is a task performed by an email client after the operating system has loaded, and starting in safe mode is an option that can be selected during the booting process to troubleshoot issues with the operating system.

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Booting And Shutting Down Process

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Question 6 Report

Use the QBASIC program below to answer question below

10 REM Program to calculate product of numbers

20 CLS

30 INPUT A

40 INPUT B

50 LET PRODUCT=A*B

60 PRINT PRODUCT

70 END

The number 10, 20,30, 40, 50, 60 and 70 as stated in the program indicate

bullet numbering

codes

bulet numbering

line number

Correct answer

Answer Details

The numbers 10, 20, 30, 40, 50, 60, and 70 in the QBASIC program represent line numbers. In QBASIC, each line of code is identified by a line number. The line numbers are used to help navigate the program, jump to specific lines, and edit the code. In the example program, line 10 is a comment that describes the program, line 20 clears the screen, line 30 asks the user for input of the value of A, line 40 asks the user for input of the value of B, line 50 multiplies A and B and stores the result in the variable PRODUCT, line 60 prints the value of PRODUCT, and line 70 ends the program.

Read lesson note on Algorithm And Flowchart (WAEC)

Algorithm And Flowchart

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Question 7 Report

Modem computers Compared to earlier computers are ?

less reliable

faster and larger

larger and stronger

faster and smaller Correct answer

Answer Details

Compared to earlier computers, modern computers are faster and smaller. This means that they can process information at a much faster rate than earlier computers and they are also more compact and easier to transport. Additionally, modern computers have more storage capacity, enabling them to store larger amounts of data. This has made them more efficient and user-friendly, making them an indispensable tool for both personal and professional use.

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Read lesson note on Computing Devices II (20th Century To Date) (WAEC)

History Of Computing

Computing Devices II (20th Century To Date)

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Question 8 Report

Duplicating copyrighted electronic or digital content without the authors approval is considered?

felonious Correct answer

ethical

treasonable

unethical

Answer Details

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Security And Ethics

Ethical Issues

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Question 9 Report

The following options are examples of information except?

area of a circle

circumference of a circle

perimeter of a rectangle

plain shape of a rectangle Correct answer

Answer Details

The example of information that does not fit with the other options is "plain shape of a rectangle". This is because the other options all relate specifically to measurements or calculations related to geometric shapes, while "plain shape of a rectangle" is a more general description that doesn't provide any specific information or calculation. For example, the "area of a circle" refers to the amount of space inside a circle, while the "circumference of a circle" refers to the distance around the outside of a circle. Similarly, the "perimeter of a rectangle" refers to the distance around the outside of a rectangle. In contrast, the phrase "plain shape of a rectangle" simply describes the fact that a rectangle is a four-sided shape with opposite sides that are equal in length and parallel to each other. It doesn't provide any specific information or calculation related to the rectangle, which is why it is the odd one out in this list of examples.

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History Of Computing

Data And Information

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Question 10 Report

The following instructions are guidelines for drawing flowcharts except that?

flowcharts must have a logical start and finish

it should follow a direction of left to right or top to bottom

it should follow a direction of right to left or bottom to top Correct answer

it should be clear, neat and easy to follow

Answer Details

The exception in the given guidelines for drawing flowcharts is that it should follow a direction of right to left or bottom to top. The standard practice for drawing flowcharts is to follow a logical direction of left to right or top to bottom. This ensures that the flowchart is easy to read and understand. Flowcharts should also have a clear and logical start and finish, and should be neat, organized, and easy to follow.

Read lesson note on Algorithm And Flowcharts (JAMB)

Algorithm And Flowcharts

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Question 11 Report

what type of network is represented in the diagram above?

. local area network

metropolitan area network

personal area network

wide area network Correct answer

Answer Details

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Communication Systems

Networking

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Question 12 Report

he QBASIC statement LETX=Y-3 means

the variables X and Y both receive the value 3

the variable X receives the value3.

the variable X receives the value of Y less 3 Correct answer

an error message has occured due to type mismatch

Answer Details

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Programming Language

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Question 13 Report

One difference between data and information is that ?

data is meaningful while information is not meaningful

data are raw facts and figures while information is computed Correct answer

information is independent of data while data is dependent on information

information is the raw material while data is the end product of information

Answer Details

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History Of Computing

Data And Information

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Question 14 Report

One-millionth of a second is also referred to as

nanosecond

microsecond

Correct answer

millisecond

picosecond

Answer Details

One-millionth of a second is also referred to as a "microsecond." The prefix "micro-" means "one millionth," so a microsecond is one millionth of a second. It is commonly used to measure small intervals of time in electronics, computer science, and other fields where precise timing is important. For example, the time it takes for a computer's processor to execute a single instruction is typically measured in microseconds.

Read lesson note on Data And Information (WAEC)

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Data And Information

History Of Computing

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Question 15 Report

Ethical practice requires a computer user to

shutdown properly Correct answer

hack into other peoples computer

intrude into peoples privacy

copy software without the license

Answer Details

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Ethical Issues

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Question 16 Report

Thy following programs are general purpose application software except

corel draw

payroll system Correct answer

Ms software

MS word

Answer Details

The correct answer is "payroll system". The other options - Corel Draw, MS Software, and MS Word - are all examples of general purpose application software. These are software programs that are designed to be used for a wide variety of tasks, such as creating documents, editing images, or managing data. A payroll system, on the other hand, is a specialized application software that is designed specifically for managing payroll processes, such as calculating employee salaries, taxes, and benefits. Therefore, it is not considered a general purpose application software.

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Application Software

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Question 17 Report

The virtual communication platform where many people keep in contact with family and friends is known as

microsoft visio

social engineering

cyberspace Correct answer

virtual reality

Answer Details

Read lesson note on Internet (JAMB)

Read lesson note on Introduction To Worldwide Web (w.w.w.) (WAEC)

Read lesson note on Communication Systems (JAMB)

Read lesson note on Networking (WAEC)

Internet

Introduction To Worldwide Web (w.w.w.)

Communication Systems

Networking

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Question 18 Report

The logic equation for the logic-circuit in the diagram above is?

Z=A+B+C

Z=A.B+C

Correct answer

Z=A+B+C

Z=A.B.C

Answer Details

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Logic Circuits

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Question 19 Report

Examples of quantitative data type are?

continuous and discrete Correct answer

local and foreign

nominal and ordinal

primary and secondary

Answer Details

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Data And Information

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Question 20 Report

What type of computer would be most suitable for a student who lives in a remote village without constant electricity

Desktop computer

Laptop computer Correct answer

Mainframe computer

Minicomputer

Answer Details

A laptop computer would be the most suitable type of computer for a student who lives in a remote village without constant electricity. This is because a laptop is portable and can be easily charged using a battery or solar-powered charger, allowing the student to work even in areas with limited or no access to electricity. Additionally, a laptop can perform all the necessary functions required for studying, including research, writing, and online communication. In contrast, a desktop computer requires a constant source of electricity and is not portable, making it less practical for a student living in a remote area without a reliable source of power. Mainframe and minicomputers are not suitable for individual use, as they are typically used in large organizations and require specialized expertise to operate.

Read lesson note on Classification Of Computing Devices (JAMB)

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Classification Of Computing Devices

History Of Computing

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Question 21 Report

The process of running more than one program concurrently is known as

multithreading

multitasking

multiprogramming Correct answer

multipurpose

Answer Details

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Read lesson note on Overview Of Computing System (WAEC)

System Development Life Cycle (SDLC)

Overview Of Computing System

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Question 22 Report

The protocol used for email transmission is known as ?

HTTP

DHCP

SMTP Correct answer

Answer Details

The protocol used for email transmission is SMTP (Simple Mail Transfer Protocol). SMTP is a communication protocol for sending and receiving email messages over the internet. It is responsible for the transfer of email messages from one server to another until they reach the recipient's email server. SMTP is used to authenticate and encrypt email transmissions to ensure that they are secure and delivered to the intended recipient.

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Internet

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Question 23 Report

Deleted items in the computers are temporarily stored in the?

memory unit

processor

recycle bin Correct answer

task manager

Answer Details

Deleted items in computers are temporarily stored in the recycle bin. When you delete a file or folder on your computer, it is not permanently removed from your system. Instead, it is moved to the recycle bin, which acts as a holding area for deleted files. The recycle bin is a temporary storage location that allows you to retrieve files that were deleted by mistake or that you no longer need. Once you empty the recycle bin, the files are permanently deleted from your computer's memory unit. Therefore, the recycle bin serves as a safety net for deleted items and helps prevent accidental file loss.

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Memory Unit

System Software

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Question 24 Report

The part labelled Y in the compiler interface in the diagram represents

intermediate code

binary code

object code Correct answer

pseudocode

Answer Details

In a typical compiler interface diagram, the part labelled Y represents the output of the compilation process. This output is usually in the form of machine-readable instructions that can be executed directly by a computer's processor. The specific type of output produced by the compiler depends on the programming language being used and the target machine's architecture. It could be in the form of assembly code, object code, or executable binary code. Therefore, the correct option is: object code or binary code, depending on the level of abstraction of the compilation process. However, if the diagram is showing the output after the optimization phase, then it could also be intermediate code.

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Question 25 Report

The signals from Ato modem X in the diagram above are

analogue

digital Correct answer

electrons

protons

Answer Details

Read lesson note on Overview Of Computing Systems (JAMB)

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Overview Of Computing Systems

History Of Computing

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Question 26 Report

127\(_{16}\) to 50A\(_{16}\)

629

_{16}

630

_{16}

631

_{16}

Correct answer

632

_{16}

Answer Details

Read lesson note on Classification Of Computing Devices (JAMB)

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Classification Of Computing Devices

History Of Computing

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Question 27 Report

What will be the result of writing the formula=year[now[][ + 3 in a worksheet,of a spread sheet,if the current calendar is 14 august ,1960?

17 august 196003

14 aug,1963 Correct answer

11 august,1963

1963

Answer Details

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Spreadsheet Package

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Question 28 Report

The part of the Corel Draw window labelled II in the diagram above is called?

zoom in Correct answer

pan

zoom out

zoom to fit

Answer Details

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Read lesson note on Output Devices (WAEC)

Graphics

Output Devices

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Question 29 Report

One similarity between be spoke software and application packages is that they are?

both available off the shelf

highly standardized

both written by computer users

meant to be used by computer end users Correct answer

Answer Details

One similarity between bespoke software and application packages is that they are both meant to be used by computer end users. Bespoke software refers to custom-made software that is developed for a specific user or organization to meet their unique requirements. It is often designed and developed by professional software developers in consultation with the client. On the other hand, application packages or software packages are pre-written software programs that are designed to perform a specific set of functions and are available to the general public. These packages are developed by software companies to address the needs of a wide range of users. Despite the fact that bespoke software is custom-made and application packages are pre-written, both types of software are intended to be used by computer end-users. The purpose of both bespoke software and application packages is to provide users with software solutions that can help them perform specific tasks or solve specific problems. Therefore, the correct answer to the question is that both bespoke software and application packages are meant to be used by computer end users.

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Database

Application Software

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Question 30 Report

Sequential files are?

sorted using index

sorted in a particular order

stored as they come Correct answer

stored in any storage media

Answer Details

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History Of Computing

Concept Of Computer Files

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Question 31 Report

The logic equation for the logic gate in the figure above is?

Z=A+B

Z=A.B
Correct answer

Z= A+B

Z=A.B.C

Answer Details

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Logic Circuits

System Software

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Question 32 Report

A student would require the following devices to online application form except?

keyboard

mouse

printer Correct answer

webcam

Answer Details

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Question 33 Report

The number of entries in the figure above is?

Correct answer

Answer Details

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Overview Of Computing Systems

History Of Computing

Data And Information

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Question 34 Report

The maximum length of a text field in MS Access is?

120

255 Correct answer

165

Answer Details

The maximum length of a text field in MS Access is 255 characters. This means that you can store up to 255 characters of text in a single field in a table. To put it simply, imagine that you have a field in a table that is used to store people's names. The maximum length of that field would be 255 characters, which is enough to accommodate even the longest names in the world (e.g., "Adolph Blaine Charles David Earl Frederick Gerald Hubert Irvin John Kenneth Lloyd Martin Nero Oliver Paul Quincy Randolph Sherman Thomas Uncas Victor William Xerxes Yancy Zeus"). If you try to enter more than 255 characters into a text field, Access will truncate the data and only store the first 255 characters. Therefore, it's important to make sure that the maximum length of your text fields is set appropriately based on the type of data you will be storing in them.

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Database

Database Package

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Question 35 Report

How many binary digits are contained in 10MB of a memory stick?

10x 1024

10x 1024 x8

10 x 1024 x 1024

10 x 1024 x 1024 x 8 Correct answer

Answer Details

To determine the number of binary digits contained in 10MB of a memory stick, we need to know the size of a binary digit in a memory stick. One byte consists of 8 bits. Therefore, 10MB of memory consists of: 10 x 1024 x 1024 bytes To calculate the number of binary digits, we need to multiply the number of bytes by 8: 10 x 1024 x 1024 x 8 = 83,886,080 bits Therefore, 10MB of memory stick contains 83,886,080 binary digits. In summary, the answer is "10 x 1024 x 1024 x 8" which represents the total number of bits contained in 10MB of a memory stick.

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Question 36 Report

Key skills of a system analyst include the following except

ability to troubleshoot

interest in learning new skills

motivational skills Correct answer

proficiency in programming languages

Answer Details

The key skills of a system analyst include the ability to troubleshoot, an interest in learning new skills, and proficiency in programming languages. However, motivational skills are not typically considered a key skill of a system analyst. System analysts are responsible for analyzing an organization's computer systems and procedures, designing information systems solutions to help the organization operate more efficiently and effectively, and ensuring that these solutions meet the organization's needs. The ability to troubleshoot problems and proficiency in programming languages are essential for this role, while an interest in learning new skills is important for keeping up with emerging technologies and trends in the field. Motivational skills, while important for many roles, are not typically considered a key skill for a system analyst.

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System Development Life Cycle (SDLC)

Artificial Intelligence

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Question 37 Report

The result of the expression 2*6+2/4*2*4^2

28 Correct answer

Answer Details

To evaluate the expression, we need to follow the rules of arithmetic operations, which are Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction (PEMDAS). First, we calculate 4^2, which is 16. Then, we perform multiplication and division from left to right, giving us: 2*6 + 2/4 * 2 * 16 = 12 + 0.5 * 32 = 12 + 16 = 28 Therefore, the result of the expression is 28. Hence, the correct option is "28".

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Question 38 Report

The process of testing the logic of algorithm to ensure they give correct result is known as ?

debbuging

desk checking Correct answer

flow charting

pseudo coding

Answer Details

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Algorithm And Flowcharts

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Question 39 Report

The pictorial representation of an object or application in the computer is called?

diagram

graphic

recycle Correct answer

image

Answer Details

Read lesson note on Graphics (WAEC)

Graphics

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Question 40 Report

use the diagram above to answer questions below

The logic gate in the diagram above is called a

AND gate Correct answer

NAND gate

NOR gate

OR gate

Answer Details

The logic gate in the given diagram is an AND gate. An AND gate is a digital logic gate that has two or more inputs and produces an output that is the logical conjunction of the inputs. In an AND gate, the output is only HIGH when both the inputs are HIGH. In the given diagram, the two inputs are A and B, and the output is Y. Therefore, if A and B are both HIGH, then the output Y will be HIGH, otherwise, it will be LOW.

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Question 41 Report

In number system ,base 16 is called ?

hexadecimal Correct answer

decimal

duodecimal

octal

Answer Details

In number system, base 16 is called "hexadecimal". We use different number systems in our daily lives to represent and manipulate numbers. The most common number system is the decimal system, which uses ten digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) to represent all numbers. However, in some computer science and engineering applications, it is more convenient to use the hexadecimal number system, which uses 16 digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F) to represent numbers. The letters A through F are used to represent the numbers 10 through 15, respectively. For example, the decimal number 15 is represented as F in hexadecimal, and the decimal number 255 is represented as FF in hexadecimal. So, to summarize, base 16 is called "hexadecimal" because it uses 16 digits to represent numbers, and it is commonly used in computer science and engineering applications.

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Data And Information

History Of Computing

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Question 42 Report

The type of transmission in the part labelled q in the diagram above is called

broadcast

full duplex Correct answer

half duplex

simplex

Answer Details

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Communication Systems

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Question 43 Report

In the URL https://waec.org.ng, the domain name is?

waec.org.ng Correct answer

http://www.

//www/.waec.

org.ng.

Answer Details

In the URL https://waec.org.ng, the domain name is "waec.org.ng". A domain name is a unique name that identifies a website on the internet. It is part of a larger internet address called a URL (Uniform Resource Locator), which specifies the exact location of a web page or resource on the internet. In the given URL, "waec.org.ng" is the domain name. The ".org.ng" is the top-level domain (TLD) for Nigeria, and it indicates that the website is operated by an organization based in Nigeria. The "https://" portion of the URL specifies the protocol being used to access the website, which in this case is HTTP Secure, or HTTPS. The "www" portion is a subdomain that is used to indicate the specific server that hosts the website. However, many websites nowadays omit the "www" subdomain and simply use the domain name. Therefore, the correct answer to the question is "waec.org.ng" is the domain name in the given URL.

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Internet

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Question 44 Report

The number of entries in the diagram above is

3 Correct answer

Answer Details

Read lesson note on Data And Information (JAMB)

Data And Information

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Question 45 Report

Serial files are

stored using a key

sorted in a particular order

stored as they come Correct answer

stored in any storage media

Answer Details

Serial files are stored as they come, meaning that the records are simply added to the end of the file as they are created or received. A serial file is a type of file organization used in computer systems where records are stored one after the other, with no particular order or sequence. The records are simply appended to the end of the file as they are created or received, and there is no attempt to sort or organize them in any particular way. Serial files are commonly used for logging or recording sequential events such as sensor readings, financial transactions, or web server requests. They are simple and easy to implement and are suitable for applications where the records are read in the order they were created. However, one drawback of serial files is that searching and sorting records can be time-consuming and inefficient because the records are not stored in any particular order. For applications that require frequent searching or sorting of records, other file organization methods such as indexed files or relational databases may be more appropriate. Therefore, the correct answer to the question is that serial files are stored as they come, with no particular order or sequence.

Read lesson note on Concept Of Computer Files (JAMB)

Concept Of Computer Files

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Question 46 Report

Which of the following operations will not run a slide show in MS PowerPoint?

pressing F5

pressing shift +f5

choosing the slide show tab Correct answer

clicking on the slide show icon bar

Answer Details

All of the options listed are used to run a slide show in MS PowerPoint except for "choosing the slide show tab". The "slide show tab" is used to access and customize slide show settings, but it does not actually start the slide show. The other options listed are used to start the slide show: pressing F5 starts the slide show from the beginning, pressing shift + F5 starts the slide show from the current slide, and clicking on the slide show icon bar also starts the slide show from the beginning.

Read lesson note on Presentation Package (JAMB)

Presentation Package

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Question 47 Report

The keyboard key combination ALT + F4 in microsoft windows will

close active programmes Correct answer

open a file

restart the computer

Select two stages of booting from the following list

Answer Details

The keyboard key combination ALT + F4 in Microsoft Windows will close active programs. When you press ALT + F4, it sends a command to the operating system to close the currently active program or window. This is a quick way to exit a program when you're finished using it, rather than using the mouse to click on the "X" button at the top right corner of the window.

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Read lesson note on Booting And Shutting Down Process (WAEC)

Web Design Package

Booting And Shutting Down Process

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Question 48 Report

The octal fraction 0.65 converts to binary as

0.110011 Correct answer

0.110101

101101

101111

Answer Details

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History Of Computing

Data And Information

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Question 49 Report

The file access method illustrated in the diagram above is called?

hashed access

indexed access Correct answer

random access

sequential access

Answer Details

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Read lesson note on Concept Of Computer Files (JAMB)

History Of Computing

Concept Of Computer Files

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Question 50 Report

The shortcut key for the open dialog box in MS Word is ?

Alt + F12

Ctrl + F12 Correct answer

F12

shift + f12

Answer Details

The shortcut key for the open dialog box in MS Word is "Ctrl + F12". When you press the "Ctrl + F12" keys simultaneously in MS Word, it opens the "Open" dialog box. This dialog box allows you to browse and select a file that you want to open in MS Word. The "Alt + F12" shortcut key in MS Word is used to save a document with a new name, while "F12" is used to open the "Save As" dialog box. The "Shift + F12" shortcut key is used to save the current document. Shortcut keys are a useful way to save time and increase productivity when working in MS Word. By learning and using shortcut keys, you can perform common tasks quickly and easily, without having to navigate through multiple menus and options.

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Word Processing Package

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Question 51 Report

The part labelled X in the figure above is called?

auxiliary memory

output unit Correct answer

secondary memory

storage unit

Answer Details

Read lesson note on History Of Computing (JAMB)

Read lesson note on Concept Of Computer Files (WAEC)

History Of Computing

Concept Of Computer Files

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WAEC SSCE - Computer Studies - 2022 (Objective)