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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Total Quizzes: 30
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Last Refreshed: 2025-06-27 14:41:54
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 full form of CPU?
Q1. 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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Q2. Which of the following monitor looks like a television and are normally used with non-portable computer systems?
Q2. 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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Q3. What is the purpose of the BIOS in a computer?
Q3. 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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Q4. What does BIOS stands for in computer?
Q4. 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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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 a common output device used in computers?
Q6. 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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Q7. What is the purpose of a firewall in a computer network?
Q7. 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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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. Which of the following language does the computer understand?
Q9. 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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Q10. Who is the father of Computers?
Q10. 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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Q11. Which of the following is not a type of computer code?
Q11. Which of the following is not a type of computer code?
Answer: (A) EDIC
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.
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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Q12. Which of the following computer language is written in binary codes only?
Q12. 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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Q13. What is the basic unit of data storage in a computer?
Q13. 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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Q14. What is the function of a computer's motherboard?
Q14. 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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Q15. What is the primary function of a search engine?
Q15. 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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Q16. What is the term used to describe the process of converting digital data into a format that can be transmitted over a network?
Q16. 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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Q17. Which of the following is not a type of computer code?
Q17. 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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Q18. Which is called the brain of the computer?
Q18. 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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Q19. What is the difference between RAM and ROM?
Q19. 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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Q20. What is the software that manages the hardware and software resources of a computer system?
Q20. 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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