Computer Fundamentals MCQ | SET – 04
Here are some multiple choice questions about Computer Fundamentals MCQ | SET – 04 along with their answers and explanations. Here are 20 Questions for you:
Question 1: What is the main function of an input device in a computer system?
A) To display output to the user.
B) To store data for future use.
C) To provide power to the computer.
D) To enter data into the computer.
Answer: D) To enter data into the computer.
Explanation: Input devices are used to enter data or commands into the computer. Examples of input devices include keyboards, mice, scanners, and microphones. They allow users to interact with the computer and provide input that can be processed and utilized by the computer system.
Question 2: Which of the following is an example of secondary storage?
A) RAM
B) Cache memory
C) Hard disk drive
D) CPU
Answer: C) Hard disk drive.
Explanation: Secondary storage refers to non-volatile memory that is used for long-term storage of data. Hard disk drives (HDDs) are a common example of secondary storage devices. They provide large storage capacity for saving files and programs even when the computer is turned off.
Question 3: Which component of a computer is responsible for executing instructions?
A) RAM
B) CPU
C) GPU
D) Motherboard
Answer: B) CPU (Central Processing Unit).
Explanation: The CPU is often referred to as the “brain” of the computer. It is responsible for executing instructions and performing calculations. The CPU consists of an arithmetic logic unit (ALU) and control unit, which work together to process data and carry out operations.
Question 4: What does the term “ROM” stand for in computing?
A) Random Overwrite Memory
B) Read-Only Memory
C) Randomly Ordered Memory
D) Random Output Memory
Answer: B) Read-Only Memory.
Explanation: ROM is a type of memory that stores data permanently and cannot be modified or erased by normal computer operations. It contains firmware or software instructions that are permanently written during manufacturing and retain their information even when the computer is powered off.
Question 5: Which programming language is used for creating web pages?
A) Java
B) C++
C) HTML
D) Python
Answer: C) HTML (Hypertext Markup Language).
Explanation: HTML is a markup language used for creating web pages and structuring their content. It is not a programming language in the traditional sense, as it does not have variables or complex logic. HTML defines the structure and presentation of web content, which is then rendered by web browsers.
Question 6: What does the acronym “URL” stand for?
A) Universal Resource Locator
B) Uniform Resource Language
C) Unified Resource Link
D) Unique Resource Library
Answer: A) Universal Resource Locator.
Explanation: A URL is the address used to locate a resource on the internet. It consists of different components, such as the protocol (e.g., http:// or https://), domain name, and path. URLs are used to access websites, web pages, files, and other resources on the internet.
Question 7: What is the purpose of a firewall in network security?
A) To prevent unauthorized access to a computer or network.B) To increase the speed of internet connections.
C) To encrypt sensitive data transmitted over a network.
D) To provide backup and recovery services.
Answer: A) To prevent unauthorized access to a computer or network.
Explanation: A firewall is a network security device that monitors and filters network traffic. It acts as a barrier between a trusted internal network and an external network, such as the internet. Its primary purpose is to block unauthorized access and potential threats from entering a network while allowing legitimate traffic to pass through.
Question 8: What does RAM stand for in a computer?
A) Random Access Memory
B) Read-Only Memory
C) Redundant Array of Memory
D) Random Array Memory
Answer: A) Random Access Memory
Explanation: RAM stands for Random Access Memory, and it is a type of computer memory that allows data to be read and written in any order, enabling quick access to data by the CPU. It is used to temporarily store data and programs that are currently being used by the computer.
Question 9: What is the function of a CPU (Central Processing Unit) in a computer?
A) To store data for the long term.
B) To manage computer peripherals.
C) To perform calculations and execute instructions.
D) To provide a graphical user interface.
Answer: C) To perform calculations and execute instructions.
Explanation: The CPU, or Central Processing Unit, is the brain of the computer. It performs calculations, executes instructions, and manages the overall operation of the computer. It processes data and performs tasks requested by various programs and the operating system.
Question 10: Which of the following is an example of an input device?
A) Monitor
B) Printer
C) Keyboard
D) Speakers
Answer: C) Keyboard
Explanation: A keyboard is an input device that allows users to enter data and commands into the computer. It is used to type text, numbers, and other characters, providing input to the computer.
Question 11: Which computer port is typically used to connect a printer to a computer?
A) USB
B) HDMI
C) VGA
D) Ethernet
Answer: A) USB
Explanation: The USB (Universal Serial Bus) port is commonly used to connect peripherals such as printers to a computer. USB is a versatile and widely supported interface for various devices.
Question 12: What does CPU clock speed measure?
A) The number of cores in the CPU.
B) The amount of cache memory in the CPU.
C) The number of instructions the CPU can execute per second.
D) The physical size of the CPU.
Answer: C) The number of instructions the CPU can execute per second.
Explanation: CPU clock speed, measured in Hertz (Hz) or Gigahertz (GHz), represents the number of instructions the CPU can execute per second. Higher clock speeds generally indicate faster processing capabilities.
Question 13: Which of the following storage devices uses magnetic storage technology?
A) Solid State Drive (SSD)
B) Hard Disk Drive (HDD)
C) USB Flash Drive
D) CD-ROM
Answer: B) Hard Disk Drive (HDD)
Explanation: A Hard Disk Drive (HDD) uses magnetic storage technology to store data on rotating platters. Data is read and written using magnetic heads that move over the spinning disks.
Question 14: What is the purpose of an operating system in a computer?
A) To protect the computer from viruses and malware.
B) To manage hardware resources and provide an interface for user interaction.
C) To perform complex mathematical calculations.
D) To control the flow of electricity in the computer.
Answer: B) To manage hardware resources and provide an interface for user interaction.
Explanation: The purpose of an operating system is to manage the computer’s hardware resources, provide a user-friendly interface, and facilitate communication between the user and the hardware and software components.
Question 15: What is the primary purpose of the CPU (Central Processing Unit) in a computer?
A) To store data
B) To execute program instructions
C) To provide internet connectivity
D) To display images on the screen
Answer: B) To execute program instructions
Explanation: The CPU is the “brain” of the computer and its primary purpose is to execute program instructions. It performs arithmetic, logical, control, and input/output operations, making it responsible for carrying out the actual processing of data and instructions.
Question 16: What is the purpose of RAM (Random Access Memory) in a computer?
A) To store long-term data
B) To control input and output devices
C) To provide internet connectivity
D) To store data and program instructions temporarily
Answer: D) To store data and program instructions temporarily
Explanation: RAM is a type of volatile memory that is used to store data and program instructions temporarily while the computer is running. It provides quick access to information that the CPU needs to perform its operations. However, the data stored in RAM is lost when the computer is powered off or restarted.
Question 17: Which of the following is an example of an input device?
A) Printer
B) Monitor
C) Keyboard
D) Speakers
Answer: C) Keyboard
Explanation: A keyboard is an example of an input device that allows users to input data and commands into the computer. It translates the keystrokes into electrical signals that can be processed by the computer.
Question 18: What does the acronym “GUI” stand for?
A) Graphical User Interface
B) General User Interface
C) Global User Integration
D) Graphical Unit Integration
Answer: A) Graphical User Interface
Explanation: GUI stands for Graphical User Interface, which refers to a visual interface that allows users to interact with software applications using graphical elements such as windows, icons, and menus.
Question 19: What is the purpose of a compiler in programming?
A) To execute program instructions
B) To translate source code into machine code
C) To provide a user interface for software applications
D) To control input and output devices
Answer: B) To translate source code into machine code
Explanation: A compiler is a software tool that translates source code written in a high-level programming language into machine code, which can be executed directly by the computer’s CPU. It performs tasks such as syntax checking, optimization, and code generation.
Question 20: Which of the following is an example of a secondary storage device?
A) RAM
B) CPU
C) Hard disk drive
D) Motherboard
Answer: C) Hard disk drive
Explanation: A hard disk drive is an example of a secondary storage device that provides long-term storage for data, programs, and operating systems. It uses magnetic storage to store and retrieve digital information.
Conclusion:
These questions cover some fundamental concepts in computer science. I hope the explanations help clarify the concepts for you.
Please note that these questions cover some fundamental concepts in computer science. If you have any specific topics or areas you’d like to explore further, feel free to ask!
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