Explore topic-wise MCQs in Computer Science.

This section includes 192 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.

151.

 _____ Operating system works on specified time constraint.

A. Distributed
B. Real-time
C. Single-user
D. Appropriate
Answer» C. Single-user
152.

Which of the following scanners are commonly used in the publishing industry?

A. Low resolution flatbed scanners
B. Sheet-fed scanners
C. Handheld scanners
D. Drum scanners
Answer» E.
153.

A single computing component with two or more independent actual processing units is known as _______.

A. Bimodal processor
B. Multi-core processor
C. In-line core processor
D. Multi-line cores
Answer» C. In-line core processor
154.

 A business card reader uses _______________ technology to convert text on business card to typed text on the computer. 

A. Impact
B. MICR
C. Optical Character Recognition
D. Optical Mark Reader
Answer» D. Optical Mark Reader
155.

The device shown in this picture is _________.  

A. Optical Scanner
B. Dot Matrix Printer
C. Optical Mark Reader
D. Business Card Reader
Answer» E.
156.

Which of the following is a type of non- impact printer? 

A. Laser Printers
B. Line Printers
C. Dot-Matrix Printers
D. Daisy-Wheel Printers
Answer» D. Daisy-Wheel Printers
157.

TFT, LCD, LED are terms associated with ______________.

A. Monitors
B. Inkjet Printers
C. Scanners
D. Web Camera
Answer» B. Inkjet Printers
158.

Which of the following statements hold(s) true regarding the given device?  Statement 1: It is used to read credit/debit cards.Statement 2: It is known as Optical Mark Reader 

A. Only Statement 1
B. Only Statement 2
C. Both Statement 1 and Statement 2
D. Neither Statement 1 nor Statement 2
Answer» B. Only Statement 2
159.

Which of the following statements is CORRECT about the given logo? 

A. It provides basic functionality to the computer.
B. It converts a high level language program into machine language.
C. It is designed to operate computer hardware.
D. None of these
Answer» E.
160.

A software is called robust, if_______

A. It can cope up data errors.
B. It is authorized to specific users.
C. It can be used to control system performance.
D. It is written in low level language.
Answer» B. It is authorized to specific users.
161.

Which of the following is/are the hardware interfaces to connect devices to the computer? 

A. USB
B. FireWire
C. Thunderbolt
D. All of these
Answer» E.
162.

_______ is a type of 2D barcode, consisting of an array of black and white squares.

A. Smart code
B. Square code
C. Bubble code
D. QR code
Answer» E.
163.

What is the purpose of a CPU heat sink?

A. It blows cool water onto the processor.
B. It stores energy created by the processor to power the computer.
C. It dissipates heat from the processor.
D. It keeps the processor warm enough to function correctly.
Answer» D. It keeps the processor warm enough to function correctly.
164.

Which of the following statements hold (s) true regarding the given device.Statement 1: It is a device that performs a variety of functions that would otherwise be carried out by separate peripheral devices.Statement 2: It is known as Interactive Single Device. 

A. Only Statement 1
B. Only Statement 2
C. Both Statement 1 and Statement 2
D. Neither Statement 1 nor Statement 2
Answer» B. Only Statement 2
165.

Which of the following components of computer directs the manner and sequence of operations for all other components?

A. Memory Unit
B. Input Unit
C. Control Unit
D. Output Unit
Answer» D. Output Unit
166.

The main component of a desktop PC which houses the computer's critical parts is called the ________.

A. Processor
B. Memory
C. Hard Disk
D. System Unit
Answer» E.
167.

The image of a computing device is given below. Answer the questions that follow: Which of the following statements is NOT true about the given machine?

A. It is an electronic machine.
B. It is cheaper than laptops.
C. It stores, retrieves and processes data.
D. It is powered by a rechargeable battery and that's why needs to be charged regularly.
Answer» E.
168.

Which of the following is/are types of solid state storage devices?  

A. Multimedia card
B. USB Flash drive
C. SDXC card
D. All of these
Answer» E.
169.

Identify the following: - It is a set of commands, instructions, rules and syntax. - It is used to create a software program.

A. Integrated chip
B. Software package
C. Operating system
D. Programming language
Answer» E.
170.

Identify the following with the help of given example. It is just like the principal of your school. The principal has various responsibilities to manage the school, like supervising students, teachers, maintaining discipline, setting the examination schedule, timetable, curriculum, etc. In the same way, it performs various functions to manage the working of a computer. 

A. Operating system such as Windows 7
B. Application system such as Android
C. System program such as Google Chrome
D. Management system such as Word Processor
Answer» B. Application system such as Android
171.

Which of the following statements is INCORRECT about the given device?

A. The data is read by a laser light.
B. Since the pits on this disc is much smaller, it allows higher storage capacities given the same amount of surface area.
C. Higher quality picture or sound can be rendered in it.
D. None of these.
Answer» E.
172.

Identify the following device:- It eliminates the need of manually entry of data.- It improves data accuracy and timeliness of data processed. - It demands high quality of source documents.

A. Biometric Device
B. Touchscreen
C. OCR
D. Light Pen
Answer» D. Light Pen
173.

It was a digital mechanical calculator invented by a German mathematician and philosopher. It was the first calculator that would perform all four arithmetic operations. Identify the device.  

A. Pascaline
B. Stepped Reckoner
C. Jacquard's loom
D. Difference engine
Answer» C. Jacquard's loom
174.

A light pen________.

A. Can draw directly on screen
B. Is cheaper than mouse
C. Can be used for long hours without any fatigue
D. Is always accurate while drawing.
Answer» B. Is cheaper than mouse
175.

Which of the following best describes Virtual Reality?

A. A computer game involving graphics and multimedia.
B. A 3D simulation of a real or imagined environment using computers.
C. A simulator with a simulation suit and simulating goggles.
D. Images created in five dimensions.
Answer» C. A simulator with a simulation suit and simulating goggles.
176.

Which of the following operations are NOT performed by system software?

A. Reading data from input devices.
B. Converting data and instructions in binary form - making it easily understandable by the computer.
C. Creating a logo for the system software that is being used on the computer.
D. Checking the working of all peripheral devices.
Answer» D. Checking the working of all peripheral devices.
177.

Which of the following statements is NOT true about System Software?

A. It is designed to operate the computer hardware.
B. It provides basic functionality to the computer.
C. They are simple programs designed to accomplish certain tasks.
D. It is responsible for managing a variety of independent hardware components.
Answer» D. It is responsible for managing a variety of independent hardware components.
178.

Which of the following is NOT true in the case of software?

A. It is a physical device.
B. It enables the computer to perform certain tasks for the users.
C. It enables the user to interact with the computer.
D. It is a collection of instructions.
Answer» B. It enables the computer to perform certain tasks for the users.
179.

Which of the following is NOT a type of an optical disc?   

A. Blu-Ray
B. DVD
C. CD-ROM
D. Zip Disk
Answer» E.
180.

Which of the following would you use to create a budget?

A. MS-Word
B. MS-PowerPoint
C. MS-Access
D. MS-Excel
Answer» E.
181.

Select the INCORRECT match regarding uses of computers in various fields.

A. Schools - Results
B. Shops - Bills
C. Offices - Eye testing
D. Hospitals - Diagnosing diseases
Answer» D. Hospitals - Diagnosing diseases
182.

A_____ contains specific rules and words. They express the logical step involved in solving a problem.

A. Programming language
B. Syntax
C. Programming Hierarchy
D. Semantics
Answer» B. Syntax
183.

Which of the following devices incorporates a small computing chip?

A. Smartphone
B. Car security system
C. Smart watch
D. All of these
Answer» E.
184.

What is dot pitch used to measure?  

A. The sharpness of a monitor's display.
B. The number of pages printed per minute.
C. The megapixel count of a digital camera.
D. The shape of individual pixels on a screen.
Answer» B. The number of pages printed per minute.
185.

What unit of measurement is used to measure digital camera image resolution?

A. Megabytes
B. Megahertz
C. Megatons
D. Megapixels
Answer» E.
186.

The given type of keyboard can be seen in ________.

A. Restaurant
B. Defence
C. Military
D. None of these
Answer» B. Defence
187.

Which of the following output devices would be most suitable for producing a wage slip printed on a carbonised paper?

A. Inkjet printer
B. Laser printer
C. Dot matrix printer
D. Plotter
Answer» D. Plotter
188.

Which of the following connects the CPU to various internal components and to expansion cards for graphics, networking and sound?

A. Ports
B. Chipset
C. Buses
D. Registers
Answer» D. Registers
189.

Which of the following devices can sense hand-drawn marks such as small circles or rectangles made on pre-printed forms?

A. OCR
B. OMR
C. MBR
D. MICR
Answer» C. MBR
190.

What do you mean by debugging?  

A. It is the process of identifying all errors from a computer program.
B. It is the process to translate binary code into digital code.
C. It is the process to translate digital code into binary code.
D. All of these
Answer» B. It is the process to translate binary code into digital code.
191.

Match the types of software with their examples.Types of SoftwareExamples(a) Word processing software(i) General purpose Application software(b) Presentation software(ii) Specific purpose Application software(c) Hotel management software  (d) Railway Reservation system  

A. (i) - a, b; (ii) - c, d
B. (i) - a, c, d; (ii) - b
C. (i) - a, b, d; (ii) - c
D. (i) - a; (ii) - b, c, d
Answer» B. (i) - a, c, d; (ii) - b
192.

What part of computer is shown in the given image?  

A. RAM
B. CD
C. Hard disk
D. Floppy disk
Answer» B. CD