Computer (Computer) | 21+ MCQ Quizzes | Category (R/R/M) - SPPMMC

Computer (Computer) | MCQ Quizzes | Category (R/R/M)

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30 quizzes

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2026-03-20 05:20:18

A computer is an electronic device capable of processing information with incredible speed and accuracy. It consists of hardware components like the CPU, memory, and storage, as well as software that instructs it. From personal computers to powerful servers, these machines have revolutionized how we communicate, learn, work, and entertain. Computers process data, perform calculations, and store information, making them indispensable tools in virtually every field.
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Category UID: 21

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Category Name: Computer

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Last Refreshed: 2026-03-20 05:20:18

Category Description: Computers: A Brief Overview A computer is an electronic device capable of processing data according to instructions given to it. This processing involves inputting data, storing it, manipulating it, and producing output. Key Components: * Hardware: The physical components of a computer, including the central processing unit (CPU), memory, storage devices, input/output devices, and peripherals. * Software: The intangible programs and applications that instruct the hardware to perform specific tasks. This includes operating systems, software applications, and programming languages. How Computers Work: * Input: Data is entered into the computer through devices like keyboards, mice, scanners, or digital cameras. * Processing: The CPU interprets and executes instructions from software, performing calculations and making decisions. * Storage: Data is saved on storage devices such as hard drives, solid-state drives, or external drives for later use. * Output: Processed data is displayed on monitors, printed on paper, or sent to other devices as output. Types of Computers: * Personal Computers (PCs): Desktop and laptop computers for individual use. * Servers: Powerful computers that manage networks and share resources. * Supercomputers: Extremely powerful computers used for complex calculations and simulations. * Mainframes: Large computers capable of handling massive amounts of data. * Embedded Computers: Computers integrated into other devices like smartphones, cars, and appliances. Impact of Computers: Computers have revolutionized society, transforming industries, education, communication, and entertainment. They have increased efficiency, accuracy, and speed in various fields. However, their widespread use also raises concerns about privacy, security, and dependence. Computers continue to evolve rapidly, with advancements in artificial intelligence, quantum computing, and other technologies promising to shape the future.

Q1. What is the function of a computer's motherboard?
Q1. What is the function of a computer's motherboard?

(A) To store data
(A) To store data
(B) To connect the CPU to other components
(B) To connect the CPU to other components
(C) To process instructions
(C) To process instructions
(D) To display graphics
(D) To display graphics
Answer: (B) To connect the CPU to other components
Answer: (B) To connect the CPU to other components
A computer's motherboard is the main circuit board that connects and powers all of the computer's internal components and allows them to communicate with each other. The motherboard is the central hub that connects all of the computer's hardware components, including the CPU, GPU, RAM, storage devices, and peripherals.
A computer's motherboard is the main circuit board that connects and powers all of the computer's internal components and allows them to communicate with each other. The motherboard is the central hub that connects all of the computer's hardware components, including the CPU, GPU, RAM, storage devices, and peripherals.

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@1588

2024-09-08

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Q2. Which of the following is the smallest unit of data in a computer?
Q2. Which of the following is the smallest unit of data in a computer?

(A) Byte
(A) Byte
(B) Nibble
(B) Nibble
(C) Bit
(C) Bit
(D) KB
(D) KB
Answer: (C) Bit
Answer: (C) Bit
A bit (binary digit) is the smallest and most fundamental unit of data in computing. It represents a single binary value, either a 0 or a 1. All other units of digital data, such as bytes, kilobytes, megabytes, etc., are made up of combinations of bits. A byte, for example, is composed of 8 bits.
A bit (binary digit) is the smallest and most fundamental unit of data in computing. It represents a single binary value, either a 0 or a 1. All other units of digital data, such as bytes, kilobytes, megabytes, etc., are made up of combinations of bits. A byte, for example, is composed of 8 bits.

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@2471

2025-06-19

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Q3. What is the software that manages the hardware and software resources of a computer system?
Q3. What is the software that manages the hardware and software resources of a computer system?

(A) Application software
(A) Application software
(B) Operating system
(B) Operating system
(C) Utility software
(C) Utility software
(D) Programming software
(D) Programming software
Answer: (B) Operating system
Answer: (B) Operating system
The operating system (OS) is the core software that manages the computer's hardware and software resources. It provides a platform for other applications to run. Common examples of operating systems include Windows, macOS, and Linux.
The operating system (OS) is the core software that manages the computer's hardware and software resources. It provides a platform for other applications to run. Common examples of operating systems include Windows, macOS, and Linux.

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@1484

2024-08-16

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Q4. What is the term used to describe the process of converting data into a code that cannot be read or understood without a key?
Q4. What is the term used to describe the process of converting data into a code that cannot be read or understood without a key?

(A) Encoding
(A) Encoding
(B) Decoding
(B) Decoding
(C) Encrypting
(C) Encrypting
(D) Decrypting
(D) Decrypting
Answer: (C) Encrypting
Answer: (C) Encrypting
Encrypting is the process of converting data into a code that cannot be read or understood without a key. This is done to protect sensitive information from unauthorized access.
Encrypting is the process of converting data into a code that cannot be read or understood without a key. This is done to protect sensitive information from unauthorized access.

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2024-08-16

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Q5. Which of the following is not a type of computer code?
Q5. Which of the following is not a type of computer code?

(A) Source code
(A) Source code
(B) Object code
(B) Object code
(C) Machine code
(C) Machine code
(D) Design code
(D) Design code
Answer: (D) Design code
Answer: (D) Design code
Computer code refers to the instructions that a computer can understand and execute. Source code is human-readable code written by programmers using a high-level programming language (e.g., Python, Java, C++).Object code is the output of a compiler after translating source code into machine-readable instructions, but it's not yet executable on its own and often needs to be linked with other object files. Machine code is the lowest-level programming language, directly executable by a computer's CPU. It consists of binary instructions (0s and 1s).Bytecode is an intermediate form of code that is typically executed by a virtual machine (like the Java Virtual Machine). It's platform-independent.
Computer code refers to the instructions that a computer can understand and execute. Source code is human-readable code written by programmers using a high-level programming language (e.g., Python, Java, C++).Object code is the output of a compiler after translating source code into machine-readable instructions, but it's not yet executable on its own and often needs to be linked with other object files. Machine code is the lowest-level programming language, directly executable by a computer's CPU. It consists of binary instructions (0s and 1s).Bytecode is an intermediate form of code that is typically executed by a virtual machine (like the Java Virtual Machine). It's platform-independent.

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@2473

2025-06-19

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Q6. What is the purpose of a firewall in a computer network?
Q6. What is the purpose of a firewall in a computer network?

(A) To increase internet speed
(A) To increase internet speed
(B) To store data
(B) To store data
(C) To protect against unauthorized access
(C) To protect against unauthorized access
(D) To provide wireless connectivity
(D) To provide wireless connectivity
Answer: (C) To protect against unauthorized access
Answer: (C) To protect against unauthorized access
A firewall is a security system that monitors and controls network traffic. It acts as a barrier between a trusted network (e.g., your home or office network) and an untrusted network (e.g., the internet). Firewalls help prevent unauthorized access to your network.
A firewall is a security system that monitors and controls network traffic. It acts as a barrier between a trusted network (e.g., your home or office network) and an untrusted network (e.g., the internet). Firewalls help prevent unauthorized access to your network.

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@1485

2024-08-16

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Q7. What is the primary function of RAM?
Q7. What is the primary function of RAM?

(A) Stores data permanently
(A) Stores data permanently
(B) Temporarily stores data for immediate use
(B) Temporarily stores data for immediate use
(C) Controls the flow of electricity in a computer
(C) Controls the flow of electricity in a computer
(D) Interprets and executes instructions
(D) Interprets and executes instructions
Answer: (B) Temporarily stores data for immediate use
Answer: (B) Temporarily stores data for immediate use
RAM (Random Access Memory) is a type of computer memory that stores data temporarily while the computer is running. It is used to hold data that the CPU needs to access quickly, such as programs and data being used by applications.
RAM (Random Access Memory) is a type of computer memory that stores data temporarily while the computer is running. It is used to hold data that the CPU needs to access quickly, such as programs and data being used by applications.

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@1479

2024-08-16

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Q8. What is the term used to describe the process of converting digital data into a format that can be transmitted over a network?
Q8. What is the term used to describe the process of converting digital data into a format that can be transmitted over a network?

(A) Encoding
(A) Encoding
(B) Decoding
(B) Decoding
(C) Encrypting
(C) Encrypting
(D) Decrypting
(D) Decrypting
Answer: (A) Encoding
Answer: (A) Encoding
Encoding is the process of converting digital data into a specific format that can be transmitted over a network. This format is often used to ensure compatibility between different devices and systems.
Encoding is the process of converting digital data into a specific format that can be transmitted over a network. This format is often used to ensure compatibility between different devices and systems.

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@1487

2024-08-16

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Q9. From the following list identify the hardware component that can be used to transfer files from one computer to another.
Q9. From the following list identify the hardware component that can be used to transfer files from one computer to another.

(A) BIOS
(A) BIOS
(B) Hard Disk
(B) Hard Disk
(C) CPU
(C) CPU
(D) USB Flash Drive
(D) USB Flash Drive
Answer: (D) USB Flash Drive
Answer: (D) USB Flash Drive
USB drives are commonly used for storage, data backup, and transferring files between devices. USB drives come in multiple storage capacities and different ports, each having a unique shape. Using a USB drive can differ depending on the type of computer that you want to connect to. A typical USB drive is removable, rewritable, and smaller than an optical disc.
USB drives are commonly used for storage, data backup, and transferring files between devices. USB drives come in multiple storage capacities and different ports, each having a unique shape. Using a USB drive can differ depending on the type of computer that you want to connect to. A typical USB drive is removable, rewritable, and smaller than an optical disc.

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@1061

2024-04-27

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Q10. Which is called the brain of the computer?
Q10. Which is called the brain of the computer?

(A) Monitor
(A) Monitor
(B) RAM
(B) RAM
(C) ROM
(C) ROM
(D) CPU
(D) CPU
Answer: (D) CPU
Answer: (D) CPU
Central Processing Unit (CPU) or Processor.. The CPU is a microprocessor chip containing millions of tiny transistors. It's the CPU's job to perform the calculations necessary to make the computer work the transistors in the CPU manipulate the data.
Central Processing Unit (CPU) or Processor.. The CPU is a microprocessor chip containing millions of tiny transistors. It's the CPU's job to perform the calculations necessary to make the computer work the transistors in the CPU manipulate the data.

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@289

2024-03-03

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Q11. Which of the following is not a core language used for front-end web development?
Q11. Which of the following is not a core language used for front-end web development?

(A) HTML
(A) HTML
(B) Python
(B) Python
(C) JavaScript
(C) JavaScript
(D) CSS
(D) CSS
Answer: (B) Python
Answer: (B) Python
HTML (HyperText Markup Language) is the foundation for structuring web content. CSS (Cascading Style Sheets) is used for styling the visual presentation. JavaScript adds interactivity and dynamic behavior. XML (Extensible Markup Language) is used for storing and transporting data, but it's not a core language for front-end web development in the same way the others are. Python is a general-purpose programming language often used for back-end development, but not typically for directly building the user interface of a website.
HTML (HyperText Markup Language) is the foundation for structuring web content. CSS (Cascading Style Sheets) is used for styling the visual presentation. JavaScript adds interactivity and dynamic behavior. XML (Extensible Markup Language) is used for storing and transporting data, but it's not a core language for front-end web development in the same way the others are. Python is a general-purpose programming language often used for back-end development, but not typically for directly building the user interface of a website.

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@2344

2025-02-08

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Q12. Which of the following is the correct abbreviation of COMPUTER?
Q12. Which of the following is the correct abbreviation of COMPUTER?

(A) Commonly Oriented Machine Purposely Used for Technological and Environmental Research
(A) Commonly Oriented Machine Purposely Used for Technological and Environmental Research
(B) Commonly Oriented Machine Purposely Used for Technological and Educational Research
(B) Commonly Oriented Machine Purposely Used for Technological and Educational Research
(C) Commonly Operated Machine Purposely Used for Technological and Educational Research
(C) Commonly Operated Machine Purposely Used for Technological and Educational Research
(D) Commonly Operated Machine Purposely Used for Technological and Environmental Research
(D) Commonly Operated Machine Purposely Used for Technological and Environmental Research
Answer: (C) Commonly Operated Machine Purposely Used for Technological and Educational Research
Answer: (C) Commonly Operated Machine Purposely Used for Technological and Educational Research
The word "COMPUTER" is not an abbreviation itself, but rather a standalone word derived from the verb "compute." While some informal or contextual shortenings like "comp" might be used, there is no universally recognized or official abbreviation for "COMPUTER" in the same way that there are for terms like "e.g." or "Dr." Attempts to create an acronym for "COMPUTER" (e.g., "Common Operating Machine Purposely Used for Technical and Educational Research") are generally considered backronyms and not the origin or a true abbreviation of the word.
The word "COMPUTER" is not an abbreviation itself, but rather a standalone word derived from the verb "compute." While some informal or contextual shortenings like "comp" might be used, there is no universally recognized or official abbreviation for "COMPUTER" in the same way that there are for terms like "e.g." or "Dr." Attempts to create an acronym for "COMPUTER" (e.g., "Common Operating Machine Purposely Used for Technical and Educational Research") are generally considered backronyms and not the origin or a true abbreviation of the word.

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@2465

2025-06-19

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Q13. Which of the following monitor looks like a television and are normally used with non-portable computer systems?
Q13. Which of the following monitor looks like a television and are normally used with non-portable computer systems?

(A) LED monitor
(A) LED monitor
(B) LCD monitor
(B) LCD monitor
(C) CRT monitor
(C) CRT monitor
(D) OLED monitor
(D) OLED monitor
Answer: (C) CRT monitor
Answer: (C) CRT monitor
A CRT (Cathode Ray Tube) monitor is a type of display technology that was widely used in older computer systems and televisions. They are characterized by their bulky, heavy design, which resembles traditional TV sets. These monitors use an electron gun to project a beam onto a phosphorescent screen, creating images. Due to their size and weight, CRT monitors are typically used with non-portable computer systems (desktops) and are not suitable for laptops or other mobile devices. Modern display technologies like LCD, LED, and OLED monitors are much thinner, lighter, and more energy-efficient.
A CRT (Cathode Ray Tube) monitor is a type of display technology that was widely used in older computer systems and televisions. They are characterized by their bulky, heavy design, which resembles traditional TV sets. These monitors use an electron gun to project a beam onto a phosphorescent screen, creating images. Due to their size and weight, CRT monitors are typically used with non-portable computer systems (desktops) and are not suitable for laptops or other mobile devices. Modern display technologies like LCD, LED, and OLED monitors are much thinner, lighter, and more energy-efficient.

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@2472

2025-06-19

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Q14. What is the smallest unit of data in a computer?
Q14. What is the smallest unit of data in a computer?

(A) Byte
(A) Byte
(B) Bit
(B) Bit
(C) KB
(C) KB
(D) MB
(D) MB
Answer: (B) Bit
Answer: (B) Bit
Bit (Binary Digit) Bit is the smallest unit of data in a computer. In bynary units of measurement - 4 Bit = 1 Nibble; 8 Bit = 1 Byte; 1024 Byte = 1 Kibibyte (KiB); 1024 Kibibyte = 1 Mebibyte (MiB); 1024 Mebibyte = Gibibyte (GiB); 1024 Gibibyte = 1 Tebibyte (TiB); 1024 Tebibyte = 1 Pebibyte (PiB); and so on. In decimal units of measurement - 1000 Byte = 1 Kilobyte (KB); 1000 Kilobyte = 1 Megabyte (MB); 1000 Megabyte = Gigabyte (GB); 1000 Gigabyte = 1 Terabyte (TB); 1000 Terabyte = 1 Petabyte (PB); and so on.
Bit (Binary Digit) Bit is the smallest unit of data in a computer. In bynary units of measurement - 4 Bit = 1 Nibble; 8 Bit = 1 Byte; 1024 Byte = 1 Kibibyte (KiB); 1024 Kibibyte = 1 Mebibyte (MiB); 1024 Mebibyte = Gibibyte (GiB); 1024 Gibibyte = 1 Tebibyte (TiB); 1024 Tebibyte = 1 Pebibyte (PiB); and so on. In decimal units of measurement - 1000 Byte = 1 Kilobyte (KB); 1000 Kilobyte = 1 Megabyte (MB); 1000 Megabyte = Gigabyte (GB); 1000 Gigabyte = 1 Terabyte (TB); 1000 Terabyte = 1 Petabyte (PB); and so on.

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2024-03-03

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Q15. Which of the following language does the computer understand?
Q15. Which of the following language does the computer understand?

(A) High-level language
(A) High-level language
(B) Assembly language
(B) Assembly language
(C) Machine language
(C) Machine language
(D) Natural language
(D) Natural language
Answer: (C) Machine language
Answer: (C) Machine language
Computers fundamentally understand machine language, which is composed of binary code (sequences of 0s and 1s). Every instruction and piece of data that a computer processes must ultimately be converted into this binary format. While programmers write in high-level languages (like Python or Java) or even assembly language, these languages must be translated (compiled or interpreted) into machine language before the computer's Central Processing Unit (CPU) can execute them. Natural languages are too complex and ambiguous for direct computer understanding without sophisticated artificial intelligence processing.
Computers fundamentally understand machine language, which is composed of binary code (sequences of 0s and 1s). Every instruction and piece of data that a computer processes must ultimately be converted into this binary format. While programmers write in high-level languages (like Python or Java) or even assembly language, these languages must be translated (compiled or interpreted) into machine language before the computer's Central Processing Unit (CPU) can execute them. Natural languages are too complex and ambiguous for direct computer understanding without sophisticated artificial intelligence processing.

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@2467

2025-06-19

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Q16. What is the basic unit of data storage in a computer?
Q16. What is the basic unit of data storage in a computer?

(A) Byte
(A) Byte
(B) Bit
(B) Bit
(C) Pixel
(C) Pixel
(D) Kilobyte
(D) Kilobyte
Answer: (B) Bit
Answer: (B) Bit
A byte is the smallest unit of data storage in a computer. It consists of 8 bits. Bits are the individual units of data (either 0 or 1) that make up a byte.
A byte is the smallest unit of data storage in a computer. It consists of 8 bits. Bits are the individual units of data (either 0 or 1) that make up a byte.

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@1481

2024-08-16

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Q17. Which of the following is not a type of computer code?
Q17. Which of the following is not a type of computer code?

(A) EDIC
(A) EDIC
(B) ASCII
(B) ASCII
(C) BCD
(C) BCD
(D) EBCDIC
(D) EBCDIC
Answer: (A) EDIC
Answer: (A) EDIC
The options listed are related to character encoding schemes, which are methods of representing text characters in computers. ASCII (American Standard Code for Information Interchange) is a widely used character encoding standard that represents text in computers, telecommunications equipment, and other devices. BCD (Binary-Coded Decimal) is a method of encoding decimal numbers where each decimal digit is represented by its own binary sequence. While primarily for numbers, it's a form of data representation or "code." EBCDIC (Extended Binary Coded Decimal Interchange Code) is another character encoding standard, primarily used on IBM mainframe operating systems.
The options listed are related to character encoding schemes, which are methods of representing text characters in computers. ASCII (American Standard Code for Information Interchange) is a widely used character encoding standard that represents text in computers, telecommunications equipment, and other devices. BCD (Binary-Coded Decimal) is a method of encoding decimal numbers where each decimal digit is represented by its own binary sequence. While primarily for numbers, it's a form of data representation or "code." EBCDIC (Extended Binary Coded Decimal Interchange Code) is another character encoding standard, primarily used on IBM mainframe operating systems.

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@2474

2025-06-19

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Q18. Which of the following is the brain of the computer?
Q18. Which of the following is the brain of the computer?

(A) Arithmetic and Logic unit
(A) Arithmetic and Logic unit
(B) Control unit
(B) Control unit
(C) Graphics Processing Unit
(C) Graphics Processing Unit
(D) Central Processing Unit
(D) Central Processing Unit
Answer: (D) Central Processing Unit
Answer: (D) Central Processing Unit
The Central Processing Unit (CPU) is widely known as the "brain" of the computer because it is responsible for executing instructions, performing arithmetic and logical operations, and controlling the overall flow of data and instructions within the computer system. It processes all the instructions from the software and hardware and manages the basic operations of the computer.
The Central Processing Unit (CPU) is widely known as the "brain" of the computer because it is responsible for executing instructions, performing arithmetic and logical operations, and controlling the overall flow of data and instructions within the computer system. It processes all the instructions from the software and hardware and manages the basic operations of the computer.

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@2469

2025-06-19

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Q19. What is the purpose of the BIOS in a computer?
Q19. What is the purpose of the BIOS in a computer?

(A) To store data permanently
(A) To store data permanently
(B) To connect the CPU to other components
(B) To connect the CPU to other components
(C) To manage hardware resources
(C) To manage hardware resources
(D) To Initialize the computer's hardware
(D) To Initialize the computer's hardware
Answer: (D) To Initialize the computer's hardware
Answer: (D) To Initialize the computer's hardware
The BIOS (Basic Input/Output System) is a firmware program embedded in a computer's motherboard. Its primary function is to initialize the computer's hardware components when it is first turned on. It checks the system's configuration, tests the components, and loads the operating system into memory.
The BIOS (Basic Input/Output System) is a firmware program embedded in a computer's motherboard. Its primary function is to initialize the computer's hardware components when it is first turned on. It checks the system's configuration, tests the components, and loads the operating system into memory.

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@1589

2024-09-08

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Q20. What is the purpose of a cache memory in a CPU?
Q20. What is the purpose of a cache memory in a CPU?

(A) To store data permanently
(A) To store data permanently
(B) To connect the CPU to other components
(B) To connect the CPU to other components
(C) To speed up data access for the CPU
(C) To speed up data access for the CPU
(D) To display graphics
(D) To display graphics
Answer: (C) To speed up data access for the CPU
Answer: (C) To speed up data access for the CPU
Cache memory is a small, high-speed memory component located within the CPU. Its primary purpose is to significantly speed up the CPU's access to frequently used data and instructions.
Cache memory is a small, high-speed memory component located within the CPU. Its primary purpose is to significantly speed up the CPU's access to frequently used data and instructions.

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@2280

2025-01-30

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