Computer (Computer) | MCQ Quizzes | Category (S/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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Total Quizzes: 21
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Last Refreshed: 2026-06-20 03:16:24
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 not a characteristic of a computer?
Q1. 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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Q2. What is the purpose of a firewall in a computer network?
Q2. 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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Q3. Which of the following monitor looks like a television and are normally used with non-portable computer systems?
Q3. 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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Q4. What is the difference between RAM and ROM?
Q4. 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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Q5. What is the purpose of the BIOS in a computer?
Q5. 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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Q6. From the following list identify the hardware component that can be used to transfer files from one computer to another.
Q6. 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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Q7. What is the function of a computer's motherboard?
Q7. 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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Q8. What is the purpose of a cache memory in a CPU?
Q8. 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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Q9. What is the basic unit of data storage in a computer?
Q9. 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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Q10. What is the term used to describe the process of converting data into a code that cannot be read or understood without a key?
Q10. 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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Q11. What is the primary function of RAM?
Q11. 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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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 primary function of a CPU?
Q13. 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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Q14. Which of the following is not a core language used for front-end web development?
Q14. 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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Q15. Which of the following is not an operating system for Computers?
Q15. 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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Q16. What is the primary function of a search engine?
Q16. 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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Q17. Which of the following is the correct abbreviation of COMPUTER?
Q17. 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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Q18. Which of the following is the smallest unit of data in a computer?
Q18. 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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Q19. Who is the father of Computers?
Q19. Who is the father of Computers?
Answer: (D) Charles Babbage
Answer: (D) Charles Babbage
Answer: (D) Charles Babbage
Charles Babbage was an English mathematician, philosopher, inventor, and mechanical engineer who designed the Difference Engine and, more importantly, the Analytical Engine. The Analytical Engine is considered the conceptual forerunner of the modern digital computer, incorporating features like an Arithmetic Logic Unit (ALU), basic flow control, and integrated memory, which are fundamental to today's computers. Although it was never fully built in his lifetime, his detailed designs and theoretical work laid the foundational principles for future computer development.
Charles Babbage was an English mathematician, philosopher, inventor, and mechanical engineer who designed the Difference Engine and, more importantly, the Analytical Engine. The Analytical Engine is considered the conceptual forerunner of the modern digital computer, incorporating features like an Arithmetic Logic Unit (ALU), basic flow control, and integrated memory, which are fundamental to today's computers. Although it was never fully built in his lifetime, his detailed designs and theoretical work laid the foundational principles for future computer development.
Charles Babbage was an English mathematician, philosopher, inventor, and mechanical engineer who designed the Difference Engine and, more importantly, the Analytical Engine. The Analytical Engine is considered the conceptual forerunner of the modern digital computer, incorporating features like an Arithmetic Logic Unit (ALU), basic flow control, and integrated memory, which are fundamental to today's computers. Although it was never fully built in his lifetime, his detailed designs and theoretical work laid the foundational principles for future computer development.
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Q20. Which of the following is a common output device used in computers?
Q20. 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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