Computer (Computer) | MCQ Quizzes | Category (R/R/A)
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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 Name: Computer
Category Full Name: Computer
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Last Refreshed: 2025-06-27 11:41:08
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. Which of the following is the smallest unit of data in a computer?
Q1. Which of the following is the smallest unit of data in a computer?
Answer: (C) Bit
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.
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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Q2. What is the smallest unit of data in a computer?
Q2. What is the smallest unit of data in a computer?
Answer: (B) Bit
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.
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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Q3. Which of the following is not a core language used for front-end web development?
Q3. Which of the following is not a core language used for front-end web development?
Answer: (B) Python
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.
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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Q4. Which of the following computer language is written in binary codes only?
Q4. Which of the following computer language is written in binary codes only?
Answer: (C) Machine Language
Answer: (C) Machine Language
Answer: (C) Machine Language
Machine language is the only computer language that is directly written and understood in binary codes (sequences of 0s and 1s). It is the lowest-level programming language and is specific to the computer's architecture. Every instruction that the CPU executes is in machine code. Assembly language uses mnemonics to represent machine code instructions, making it slightly more human-readable than raw binary, but it still requires an assembler to translate it into machine code. High-level languages are much more abstract and human-readable, requiring compilers or interpreters to translate them into machine code before execution.
Machine language is the only computer language that is directly written and understood in binary codes (sequences of 0s and 1s). It is the lowest-level programming language and is specific to the computer's architecture. Every instruction that the CPU executes is in machine code. Assembly language uses mnemonics to represent machine code instructions, making it slightly more human-readable than raw binary, but it still requires an assembler to translate it into machine code. High-level languages are much more abstract and human-readable, requiring compilers or interpreters to translate them into machine code before execution.
Machine language is the only computer language that is directly written and understood in binary codes (sequences of 0s and 1s). It is the lowest-level programming language and is specific to the computer's architecture. Every instruction that the CPU executes is in machine code. Assembly language uses mnemonics to represent machine code instructions, making it slightly more human-readable than raw binary, but it still requires an assembler to translate it into machine code. High-level languages are much more abstract and human-readable, requiring compilers or interpreters to translate them into machine code before execution.
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Q5. What is the primary function of a CPU?
Q5. What is the primary function of a CPU?
Answer: (C) Execute instructions and perform calculations
Answer: (C) Execute instructions and perform calculations
Answer: (C) Execute instructions and perform calculations
The CPU, or Central Processing Unit, is the "brain" of the computer. It carries out commands and processes data.
The CPU, or Central Processing Unit, is the "brain" of the computer. It carries out commands and processes data.
The CPU, or Central Processing Unit, is the "brain" of the computer. It carries out commands and processes data.
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Q6. Which of the following is not a characteristic of a computer?
Q6. Which of the following is not a characteristic of a computer?
Answer: (D) Intelligence
Answer: (D) Intelligence
Answer: (D) Intelligence
While computers can process vast amounts of data and execute complex algorithms to simulate intelligence (Artificial Intelligence), they do not possess inherent intelligence, intuition, or the ability to think, reason, or make decisions based on emotion or consciousness like humans do. Their "intelligence" is derived from the programs and data they are fed.
While computers can process vast amounts of data and execute complex algorithms to simulate intelligence (Artificial Intelligence), they do not possess inherent intelligence, intuition, or the ability to think, reason, or make decisions based on emotion or consciousness like humans do. Their "intelligence" is derived from the programs and data they are fed.
While computers can process vast amounts of data and execute complex algorithms to simulate intelligence (Artificial Intelligence), they do not possess inherent intelligence, intuition, or the ability to think, reason, or make decisions based on emotion or consciousness like humans do. Their "intelligence" is derived from the programs and data they are fed.
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Q7. What is the purpose of a cache memory in a CPU?
Q7. What is the purpose of a cache memory in a CPU?
Answer: (C) To speed up data access for the CPU
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.
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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Q8. What is the term used to describe the process of converting data into a code that cannot be read or understood without a key?
Q8. What is the term used to describe the process of converting data into a code that cannot be read or understood without a key?
Answer: (C) Encrypting
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.
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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Q9. Which of the following is not a type of computer code?
Q9. Which of the following is not a type of computer code?
Answer: (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.
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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Q10. From the following list identify the hardware component that can be used to transfer files from one computer to another.
Q10. From the following list identify the hardware component that can be used to transfer files from one computer to another.
Answer: (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.
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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Q11. What does BIOS stands for in computer?
Q11. What does BIOS stands for in computer?
Answer: (C) Basic Input output System
Answer: (C) Basic Input output System
Answer: (C) Basic Input output System
Basic Input/output System
In computing, BIOS stands for Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS, is firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup).
Basic Input/output System
In computing, BIOS stands for Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS, is firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup).
In computing, BIOS stands for Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS, is firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup).
Basic Input/output System
In computing, BIOS stands for Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS, is firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup).
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Q12. Which is called the brain of the computer?
Q12. Which is called the brain of the computer?
Answer: (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.
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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Q13. What is the full form of CPU?
Q13. What is the full form of CPU?
Answer: (B) Central Processing Unit
Answer: (B) Central Processing Unit
Answer: (B) Central Processing Unit
CPU stands for Central Processing Unit. It is often referred to as the "brain" of the computer because it is the primary component that performs most of the processing inside a computer. Its main function is to execute instructions, perform arithmetic and logical operations, and manage the overall flow of data and instructions within the computer system.
CPU stands for Central Processing Unit. It is often referred to as the "brain" of the computer because it is the primary component that performs most of the processing inside a computer. Its main function is to execute instructions, perform arithmetic and logical operations, and manage the overall flow of data and instructions within the computer system.
CPU stands for Central Processing Unit. It is often referred to as the "brain" of the computer because it is the primary component that performs most of the processing inside a computer. Its main function is to execute instructions, perform arithmetic and logical operations, and manage the overall flow of data and instructions within the computer system.
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Q14. Which of the following is a common output device used in computers?
Q14. Which of the following is a common output device used in computers?
Answer: (C) Printer
Answer: (C) Printer
Answer: (C) Printer
A printer is an output device that produces physical copies of digital documents. It can print text, images, and graphics.
A printer is an output device that produces physical copies of digital documents. It can print text, images, and graphics.
A printer is an output device that produces physical copies of digital documents. It can print text, images, and graphics.
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Q15. What is the basic unit of data storage in a computer?
Q15. What is the basic unit of data storage in a computer?
Answer: (B) Bit
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.
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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Q16. Which of the following is a common input device used in computers?
Q16. Which of the following is a common input device used in computers?
Answer: (C) Keyboard
Answer: (C) Keyboard
Answer: (C) Keyboard
A keyboard is an input device used to enter data into a computer. It typically has keys representing letters, numbers, symbols, and punctuation.
A keyboard is an input device used to enter data into a computer. It typically has keys representing letters, numbers, symbols, and punctuation.
A keyboard is an input device used to enter data into a computer. It typically has keys representing letters, numbers, symbols, and punctuation.
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Q17. Which of the following monitor looks like a television and are normally used with non-portable computer systems?
Q17. Which of the following monitor looks like a television and are normally used with non-portable computer systems?
Answer: (C) CRT 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.
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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Q18. What is the software that manages the hardware and software resources of a computer system?
Q18. What is the software that manages the hardware and software resources of a computer system?
Answer: (B) Operating system
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.
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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Q19. What is the function of a computer's motherboard?
Q19. What is the function of a computer's motherboard?
Answer: (B) To connect the CPU to other components
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.
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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Q20. Which of the following is not an operating system for Computers?
Q20. Which of the following is not an operating system for Computers?
Answer: (C) Microsoft Office
Answer: (C) Microsoft Office
Answer: (C) Microsoft Office
Microsoft Office, or simply Office, is a family of client software, server software, and services developed by Microsoft.
Microsoft Office, or simply Office, is a family of client software, server software, and services developed by Microsoft.
Microsoft Office, or simply Office, is a family of client software, server software, and services developed by Microsoft.
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