Computer (Computer) | MCQ Quizzes | Category (L/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 UID: 21
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Category Name: Computer
Category Full Name: Computer
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Last Refreshed: 2026-10-18 19:41:11
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. Which of the following is the correct abbreviation of COMPUTER?
Q2. Which of the following is the correct abbreviation of COMPUTER?
Answer: (C) Commonly Operated Machine Purposely Used for Technological and Educational 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.
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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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. What is the primary function of RAM?
Q4. What is the primary function of RAM?
Answer: (B) Temporarily stores data for immediate use
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.
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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Q5. Which of the following language does the computer understand?
Q5. Which of the following language does the computer understand?
Answer: (C) Machine 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.
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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Q6. What is the difference between RAM and ROM?
Q6. What is the difference between RAM and ROM?
Answer: (B) RAM is volatile memory, while ROM is non-volatile memory
Answer: (B) RAM is volatile memory, while ROM is non-volatile memory
Answer: (B) RAM is volatile memory, while ROM is non-volatile memory
RAM is volatile (loses data when power is off) while ROM is non-volatile (retains data).
RAM is volatile (loses data when power is off) while ROM is non-volatile (retains data).
RAM is volatile (loses data when power is off) while ROM is non-volatile (retains data).
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Q7. What is the primary function of a search engine?
Q7. What is the primary function of a search engine?
Answer: (C) To index and retrieve information from the web
Answer: (C) To index and retrieve information from the web
Answer: (C) To index and retrieve information from the web
A search engine is a software application that helps users find information on the internet. It works by indexing web pages and then retrieving relevant results based on user queries.
A search engine is a software application that helps users find information on the internet. It works by indexing web pages and then retrieving relevant results based on user queries.
A search engine is a software application that helps users find information on the internet. It works by indexing web pages and then retrieving relevant results based on user queries.
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Q8. Which of the following is not a type of computer code?
Q8. 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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Q9. Which of the following monitor looks like a television and are normally used with non-portable computer systems?
Q9. 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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Q10. What is the purpose of a firewall in a computer network?
Q10. What is the purpose of a firewall in a computer network?
Answer: (C) To protect against unauthorized access
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.
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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Q11. What is the primary function of a CPU?
Q11. 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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Q12. What is the purpose of the BIOS in a computer?
Q12. What is the purpose of the BIOS in a computer?
Answer: (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.
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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Q13. What is the term used to describe the process of converting digital data into a format that can be transmitted over a network?
Q13. What is the term used to describe the process of converting digital data into a format that can be transmitted over a network?
Answer: (A) Encoding
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.
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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Q14. What is the term used to describe the process of converting data into a code that cannot be read or understood without a key?
Q14. 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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Q15. What does BIOS stands for in computer?
Q15. 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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Q16. Which of the following is not a characteristic of a computer?
Q16. 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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Q17. What is the smallest unit of data in a computer?
Q17. 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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Q18. Which of the following is not an operating system for Computers?
Q18. 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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Q19. Which is called the brain of the computer?
Q19. 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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Q20. What is the full form of CPU?
Q20. 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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