Computer Fundamentals MCQ | SET – 05
Here are some multiple-choice questions about Computer Fundamentals MCQ | SET – 05 along with their answers and explanations. Here are 20 Questions for you:
Question 01: 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, such as the processor, memory, and storage devices. It also provides an interface, such as a graphical user interface (GUI) or a command-line interface (CLI), for users to interact with the computer and execute tasks
Question 02: What is the primary purpose of the Central Processing Unit (CPU)?
A) To store data and information.
B) To execute instructions and perform calculations.
C) To connect peripheral devices to the computer.
D) To display visual output on the monitor.
Answer: B) To execute instructions and perform calculations.
Explanation: The CPU is the “brain” of the computer and its primary purpose is to execute instructions and perform calculations. It processes data and instructions fetched from memory, performs arithmetic and logical operations, and controls the overall operation of the computer system.
Question 03: What does RAM stand for?
A) Random Access Memory.
B) Read-Only Memory.
C) Random Access Module.
D) Read-Write Memory.
Answer: A) Random Access Memory.
Explanation: RAM stands for Random Access Memory. It is a type of computer memory that allows data to be read from and written to by the CPU. It provides temporary storage for data and instructions that are actively being used by the computer.
Question 04: Which of the following is an input device?
A) Printer.
B) Monitor.
C) Keyboard.
D) Speaker.
Answer: C) Keyboard.
Explanation: A keyboard is an input device that allows the user to enter data and commands into the computer system. It consists of a set of keys, each representing a specific character or function, which are pressed by the user to input data.
Question 05: 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 an interface for user interaction, and facilitate the execution of applications. It controls the allocation of resources, such as the CPU and memory, and provides a user-friendly interface for users to interact with the computer.
Question 06: Which of the following storage devices has the fastest access time?
A) Hard disk drive (HDD).
B) Solid-state drive (SSD).
C) CD-ROM.
D) USB flash drive.
Answer: B) Solid-state drive (SSD).
Explanation: Solid-state drives (SSDs) have faster access times compared to traditional hard disk drives (HDDs). SSDs use flash memory technology, which allows for quicker retrieval and storage of data compared to the mechanical components used in HDDs.
Question 07: What is the purpose of a firewall?
A) To protect against physical damage to the computer.
B) To prevent unauthorized access to a computer or network.
C) To provide a secure connection between a computer and a network.
D) To improve the speed and performance of a computer.
Answer: B) To prevent unauthorized access to a computer or network.
Explanation: A firewall is a security device or software that monitors and controls the incoming and outgoing network traffic of a computer or network. Its primary purpose is to prevent unauthorized access and protect against malicious activities by filtering network packets based on predefined security rules.
Question 08: What is the primary function of the CPU in a computer?
A) To store data
B) To execute instructions
C) To provide internet connectivity
D) To display graphics
Answer: B) To execute instructions
Explanation: The central processing unit (CPU) is responsible for executing instructions and performing calculations in a computer. It carries out the core processing functions of the computer, including fetching instructions from memory, decoding them, and executing them to perform tasks.
Question 09: What does RAM stand for?
A) Read-Only Memory
B) Random Access Memory
C) Real-time Active Memory
D) Remote Access Module
Answer: B) Random Access Memory
Explanation: RAM stands for Random Access Memory. It is a type of computer memory that allows data to be read from and written to by the CPU. It provides temporary storage for data and instructions that are actively being used by the computer.
Question 10: Which of the following is an example of an input device?
A) Printer
B) Monitor
C) Keyboard
D) Speaker
Answer: C) Keyboard
Explanation: A keyboard is an input device that allows the user to input data and commands into the computer by pressing keys. It is commonly used for typing text, entering commands, and controlling various software applications.
Question 11: 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 operating system manages the computer’s hardware resources and provides an interface for users to interact with the computer. It controls the execution of programs, manages memory, handles input and output operations, and provides services to applications and users.
Question 12: What is the function of an optical drive in a computer?
A) To display images on the screen
B) To store data in a non-volatile manner
C) To read and write data from optical discs
D) To connect the computer to the internet
Answer: C) To read and write data from optical discs
Explanation: An optical drive is a device that uses laser technology to read and write data from optical discs such as CDs, DVDs, and Blu-ray discs. It allows the computer to access and store data on these types of removable media.
Question 13: Which of the following is a volatile storage device?
A) Hard disk drive
B) Solid-state drive
C) Flash drive
D) RAM
Answer: D) RAM
Explanation: RAM (Random Access Memory) is a volatile storage device because its contents are lost when the computer is powered off. It is used for temporary storage of data and instructions that are actively being used by the CPU.
Question 14: What is the purpose of a firewall in a computer network?
A) To prevent unauthorized access to the network
B) To increase the network speed
C) To encrypt network traffic
D) To store network data
Answer: A) To prevent unauthorized access to the network
Explanation: A firewall is a network security device that monitors and filters network traffic based on predetermined security rules. Its primary purpose is to protect the network from unauthorized access and potential threats by blocking unwanted incoming and outgoing network connections.
Question 15: What is the binary equivalent of the decimal number 10?
A) 1010
B) 1100
C) 1001
D) 1111
Answer: A) 1010
Explanation: The binary equivalent of the decimal number 10 is 1010. In binary, each digit can have a value of either 0 or 1, and the place values are powers of 2.
Question 16: Which of the following is a volatile memory?
A) Hard disk drive
B) Solid-state drive
C) Random access memory (RAM)
D) Flash memory
Answer: C) Random access memory (RAM)
Explanation: RAM is a volatile memory type because it loses its stored data when the computer is powered off or restarted. Hard disk drives, solid-state drives, and flash memory are non-volatile memory types that retain data even when the power is turned off.
Question 17: Which programming language is often used for web development?
A) Java
B) C++
C) Python
D) JavaScript
Answer: D) JavaScript
Explanation: JavaScript is a programming language commonly used for web development. It allows for dynamic interactions and behavior within web pages.
Question 18: What does the acronym “CPU” stand for?
A) Central Processing Unit
B) Computer Processing Unit
C) Control Processing Unit
D) Central Power Unit
Answer: A) Central Processing Unit
Explanation: CPU stands for Central Processing Unit, which is the main component of a computer responsible for executing instructions and performing calculations.
Question 19: What is the purpose of an IP address?
A) To identify a specific website
B) To identify a specific computer or device on a network
C) To encrypt data for secure transmission
D) To determine the internet speed of a connection
Answer: B) To identify a specific computer or device on a network
Explanation: An IP address is a unique identifier assigned to each device connected to a network. It is used to identify and communicate with specific devices over the internet or a local network.
Question 20: Which type of software provides tools for creating documents, spreadsheets, and presentations?
A) Operating system
B) Database software
C) Word processing software
D) Antivirus software
Answer: C) Word processing software
Explanation: Word processing software is specifically designed for creating, editing, and formatting text-based documents, such as letters, reports, and resumes.
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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