Computer Studies past questions: WAEC SSCE 2024

49 objective questions, with answers. Free to read and practise.

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49 questions, one at a time, marked as you go or at the end. No account needed.

1.
30. New comment can be added to a cell in MS Excel by using the procedure
1. A.Edit → Comment.
2. B.File → Comment.
3. C.Insert→ Comment.
4. D.Review→ Comment.
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Answer: D Review→ Comment.
2.
A collection of computer wires used to identify memory location in a computer is
1. A.system bus.
2. B.data bus.
3. C.data cable.
4. D.address bus.
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Answer: D address bus.
3.
A graphic or text in a document or web page that links to another file or object is referred to
1. A.a domain name.
2. B.a hyperlink.
3. C.a shortcut.
4. D.an icon.
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Answer: B a hyperlink.
4.
A The equation x =p + qr +s) can be expressed in Q BASIC programming
1. A.X = P + Q* = \(\frac{R}{S}\)
2. B.\(X = P + Q* (R\S)\)
3. C.\(X = P x Q (R\S)\)
4. D.X = P + Q = \(\frac{R}{S}\)
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Answer: B \(X = P + Q* (R\S)\)
5.
A user observed that a certain file in a removable storage device changed to a shortcut icon. This implies that
1. A.the file is corrupt.
2. B.the file is shared.
3. C.the removable storage device is corrupt.
4. D.there is a link to the file.
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Answer: C the removable storage device is corrupt.
6.
Addition and subtraction of numbers in Abacus are done using
1. A.bars.
2. B.beads.
3. C.frame.
4. D.string.
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Answer: B beads.
7.
An automatic system is one that
1. A.is operated using sophisticated skills.
2. B.needs fuel before it can. be operated by humans.
3. C.performs different kinds of tasks diligently.
4. D.requires little or no human intervention to work.
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Answer: D requires little or no human intervention to work.
8.
An internet user secures his social media account by regularly changing passwords. Which of the following passwords produces the best security?
1. A.wasscesc2024
2. B.WASSCESC2024
3. C.2024wasscesc
4. D.WASSCESchool-Candidates(@2024
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Answer: D WASSCESchool-Candidates(@2024
9.
Columns in MS Access are referred to as
1. A.fields.
2. B.files.
3. C.records.
4. D.tuples.
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Answer: A fields.
10.
Debugging in program development is the process of
1. A.fixing errors.
2. B.introducing bugs.
3. C.removing virus.
4. D.writing error messages.
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Answer: A fixing errors.
11.
Figure 4 is a flowchart symbol. Use it to answer questions this question. Identify the flowchart symbol in Figure 4.
1. A.Decision box
2. B.Manual input
3. C.Preparation
4. D.Process
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Answer: A Decision box
12.
Figure 7 represents a procedure to
1. A.backup files on a computer.
2. B.repair a corrupted file on a computer.
3. C.transfer files from one device to another.
4. D.update software on a device.
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Answer: C transfer files from one device to another.
13.
If the input variable Y in Figure 1 is passed through the device in Figure 2 before going into the logic gate in Figure 1, compute the resulting value of the output at Z.
X Y
0 0 1 1 0 1 0 1
1. A.0111
2. B.1011
3. C.1101
4. D.110
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Answer: B 1011
14.
In computer programming, it is advised to translate source code into intermediate code to
1. A.change the analysis portion for different compilers.
2. B.ensure that full native compiler is used for every new machine that will run the program.
3. C.make it easier to apply the source code modifications to improve code performance.
4. D.make the synthesis part of the compiler target-machine dependent.
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Answer: C make it easier to apply the source code modifications to improve code performance.
15.
In using the slide rule, multiplication that goes off the scale can be corrected by the following approaches except
1. A.resetting the slide.
2. B.using circular slide rule.
3. C.using flat scales.
4. D.using folded scales.
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Answer: A resetting the slide.
16.
Instant messages can be sent with little or no tine lag using
1. A.podcast
2. B.facsimile
3. C.email
4. D.chat room,
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Answer: D chat room,
17.
Instructions were written to the first generation computers using
1. A.assemblers
2. B.low level language
3. C.machine language
4. D.mnemonics
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Answer: C machine language
18.
MS Access is an example of
1. A.Word processing package.
2. B.spreadsheet application.
3. C.graphic software.
4. D.database management system.
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Answer: D database management system.
19.
One example of a file containing reference data which is usually altered is
1. A.brand name.
2. B.payroll.
3. C.price list.
4. D.stock.
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Answer: D stock.
20.
One usefulness of utility software in the computer is
1. A.conversion of source code to object code.
2. B.enhancement of communication between hardware and the computer system.
3. C.removal of malware from the computer.
4. D.to improve the functionality of hardware devices.
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Answer: C removal of malware from the computer.
21.
Read Only Memory (ROM) contains
1. A.current program in operation.
2. B.preset instructions for operation.
3. C.user instructions.
4. D.volatile programs.
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Answer: B preset instructions for operation.
22.
Set of characters used to authenticate a computer user is called
1. A.encoder.
2. B.binary code.
3. C.password.
4. D.barcode.
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Answer: C password.
23.
The art of checking for errors in a Word document before publishing is referred to as
1. A.editing.
2. B.formatting.
3. C.modifying.
4. D.proof reading.
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Answer: D proof reading.
24.
The ASCII character set represents alphabetical and control characters using numeric code ranging from
1. A.0 to 32.
2. B.0 to 64.
3. C.0 to 127.
4. D.0 to 128.
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Answer: C 0 to 127.
25.
The computer's short-term memory is the
1. A.arithmetic logic unit.
2. B.arithmetic operator.
3. C.control unit.
4. D.random access memory.
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Answer: D random access memory.
26.
The equivalent of the letter A in the standard ASCII is
1. A.01000001
2. B.01000010
3. C.01100001
4. D.01100010
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Answer: A 01000001
27.
The microprocessor that controls a washing machine is known as
1. A.bot.
2. B.console.
3. C.embedded computer.
4. D.mainframe computer.
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Answer: C embedded computer.
28.
The part labeled Q in Figure 3 is called
1. A.control unit.
2. B.data bus.
3. C.memory unit.
4. D.register.
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Answer: C memory unit.
29.
Use the devices in Figures 1 and 2 to answer the questions given that the input variables X and Y have values of 0011 and 0101 respectively as shown in Table 1.
X Y
0 0 1 1 0 1 0 1
Compute the value of the output Z in Figure 1 using the values of X and Y given.
1. A.0001
2. B.0110
3. C.0111
4. D.1000
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Answer: C 0111
30.
Use the devices in Figures 1 and 2 to answer the questions given that the input variables X and Y have values of 0011 and 0101 respectively as shown in Table 1.
X Y
0 0 1 1 0 1 0 1
If the input variable X in Figure 1 is passed through the device in Figure 2 before going into the logic gate in Figure 1, what will be the value of the output Z?
1. A.0111
2. B.1011
3. C.1101
4. D.1110
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Answer: D 1110
31.
Using the given values of X and Y for the device in Figure 1, what will be the value of the output Z if it is passed through the device in Figure 2?
X Y
0 0 1 1 0 1 0 1
1. A.0001
2. B.0110
3. C.0111
4. D.1000
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Answer: D 1000
32.
What happens when a user clicks on the icon in Figure 5 on the Microsoft Excel menu bar?
1. A.copy of the selection is put on the clipboard so that user can paste somewhere else
2. B.A label that spans multiple columns is created
3. C.Content on the clipboard is added to the document
4. D.Selected range of cells is quickly converted to a table with its own style
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Answer: C Content on the clipboard is added to the document
33.
What happens when the Shift key is pressed down while deleting a file from the computer? The file is
1. A.un- installed from the computer.
2. B.permanently deleted from the computer.
3. C.deleted and sent to the Recycle Bin.
4. D.deleted and kept in the clipboard.
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Answer: B permanently deleted from the computer.
34.
What is the function of the CorelDraw Toolbox object shown in Figure 6? It IS used to
1. A.charge the magnification level in drawing window.
2. B.draw lines and curves.
3. C.edit the shape of objects.
4. D.select and transform objects.
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Answer: D select and transform objects.
35.
Which of the following application packages is suitable for making budgets?
1. A.Word processor
2. B.Spreadsheet package
3. C.Graphic package
4. D.Database Management System
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Answer: B Spreadsheet package
36.
Which of the following features of information is not important for meaningful decision?
1. A.Accuracy
2. B.Competitiveness
3. C.Completeness
4. D.Timeliness
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Answer: B Competitiveness
37.
Which of the following hard disk drive memory capacities can store the largest size of data?
1. A.2TB
2. B.12GB
3. C.240MB
4. D.800K
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Answer: A 2TB
38.
Which of the following logic devices is considered as equivalent gate?
1. A.AND
2. B.EX-NOR
3. C.EXOR
4. D.NOR
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Answer: B EX-NOR
39.
Which of the following operations will be executed last in a program?
1. A.Addition
2. B.Division
3. C.Exponentiation
4. D.PEMDAS
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Answer: D PEMDAS
40.
Which of the following statements about firewall is correct?
1. A.A network transmission system that increases the speed of incoming and outgoing network traffic
2. B.A network security system that establishes a barrier between a trusted internal network and an untrusted external network such as the Internet
3. C.A data structure that improves the speed of data retrieval operations on a database table
4. D.A data structure created using only two rows of a database table used to uniquely identify each record
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Answer: B A network security system that establishes a barrier between a trusted internal network and an untrusted external network such as the Internet
41.
Which of the following statements about index is true? It is a data structure
1. A.that reduces the speed of data retrieval operations on a database table.
2. B.used to quickly locate data without searching every row in a table every time a database table is accessed.
3. C.created using only two rows of a database table to uniquely identify each record.
4. D.that allows relational database to split and store data in different tables, while linking disparate items.
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Answer: B used to quickly locate data without searching every row in a table every time a database table is accessed.
42.
Which of the following statements about operating system is false? It
1. A.enhances the booting process.
2. B.manages computer devices.
3. C.manages storage location.
4. D.protects the computer from surge.
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Answer: D protects the computer from surge.
43.
Which of the following statements about warm booting is true? The computer
1. A.reloads the operating system while still running in the background.
2. B.loads the operating system into memory from the power-on button.
3. C.reloads the operating system into memory while still running.
4. D.loads the application into memory from rest state.
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Answer: A reloads the operating system while still running in the background.
44.
Which of the following statements explains the function of device drivers? They
1. A.convert source code to object code.
2. B.enable hardware and software control and manage the system.
3. C.help to clean disk space and manage installation of applications.
4. D.help to improve the functionality of hardware devices.
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Answer: D help to improve the functionality of hardware devices.
45.
Which of the following statements is true about data?
1. A.Information is a product of data while knowledge is a product of information
2. B.Data produces knowledge while knowledge produces information
3. C.Data is a product of information while knowledge is a product of data
4. D.Knowledge produces information while in- formation produces data
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Answer: A Information is a product of data while knowledge is a product of information
46.
Which of the following statements is true about intranet?
1. A.Private network that uses internet protocol and is accessible by all visitors to an organization's website
2. B.Private network that uses internet protocol and is accessible by employees of an organization
3. C.Private network which does not use internet protocol and is accessible by employees of an organization
4. D.Public network that uses internet protocol and is accessible by all visitors to an organization's website
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Answer: B Private network that uses internet protocol and is accessible by employees of an organization
47.
Which of the following statements is true about preventing phishing?
1. A.Insure that antivirus is updated regularly
2. B.Do not click on links in emails from untrusted sources
3. C.Do not download from untrusted sites
4. D.Use a strong password at all times
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Answer: B Do not click on links in emails from untrusted sources
48.
Which of the following statements is true about star topologies?
1. A.Computers are connected node-to-node
2. B.Computers are connected to a central device
3. C.The connection is linear in shape
4. D.The connection is a tree-like structure
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Answer: B Computers are connected to a central device
49.
Which of the following statements is true about the rules of flowcharting?
1. A.All boxes of flowcharts are connected with arrows to show the logical connection between them
2. B.All flowchart process boxes are connected with on page connector to show the flow of operation
3. C.All flowcharts start with a start box and end with a decision box
4. D.The low of control must always enter an object from bottom to top
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Answer: A All boxes of flowcharts are connected with arrows to show the logical connection between them

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