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Question 1: What does DOS stand for?
A) Disk Operating System
B) Dual Operating System
C) Digital Operating System
D) Data Output System
Explanation: DOS stands for Disk Operating System.
Question 2: What is the main function of the CPU?
A) It executes instructions from programs
B) It stores data permanently
C) It connects the computer to the internet
D) It displays images on the screen
Explanation: The CPU executes instructions from programs.
Question 3: What is the function of RAM in a computer?
A) To store data permanently
B) To store data temporarily while the computer is running
C) To process instructions
D) To output data to devices
Explanation: RAM is temporary memory that stores data while the computer is running.
Question 4: Which of the following is an example of input hardware?
A) Keyboard
B) Printer
C) Monitor
D) Speaker
Explanation: A keyboard is an input device used to enter data into a computer.
Question 5: What is the main difference between SSD and HDD?
A) SSD is slower than HDD
B) SSD is faster and more durable than HDD
C) HDD has no moving parts
D) SSD is cheaper than HDD
Explanation: SSD is faster and more durable because it has no moving parts, unlike HDD.
Question 6: Which of these is an operating system?
A) Microsoft Office
B) Windows
C) Photoshop
D) Excel
Explanation: Windows is an operating system used to manage hardware and software resources.
Question 7: What is the primary purpose of an antivirus program?
A) To speed up the computer
B) To protect the computer from malware
C) To backup files
D) To manage system updates
Explanation: Antivirus programs protect computers by detecting and removing malware.
Question 8: Which of the following is an example of output hardware?
A) Monitor
B) Keyboard
C) Mouse
D) Scanner
Explanation: A monitor is an output device that displays information from the computer.
Question 9: What is the purpose of an IP address?
A) To provide internet access
B) To identify a device on a network
C) To secure data from unauthorized access
D) To display data on a screen
Explanation: An IP address is a unique identifier assigned to each device connected to a network.
Question 10: What does HTTP stand for?
A) Hypertext Transfer Protocol
B) Hypertext Text Processing
C) Hyperlink Text Protocol
D) Home Text Transfer Protocol
Explanation: HTTP stands for Hypertext Transfer Protocol, used for transferring web pages on the internet.
Question 11: Which part of the computer is responsible for long-term storage?
A) RAM
B) Hard Drive
C) CPU
D) Monitor
Explanation: The hard drive is responsible for long-term data storage on a computer.
Question 12: Which is the smallest unit of data in a computer?
A) Byte
B) Bit
C) Kilobyte
D) Megabyte
Explanation: A bit is the smallest unit of data in computing.
Question 13: What is the purpose of the operating system?
A) To manage hardware and software resources
B) To manage network traffic
C) To provide internet access
D) To protect the computer from viruses
Explanation: The operating system manages both hardware and software resources on the computer.
Question 14: What is the function of a router in a computer network?
A) To store data on a network
B) To direct data packets between networks
C) To process instructions
D) To protect the network from malware
Explanation: A router directs data packets between different networks, allowing communication across the internet.
Question 15: What is the purpose of cloud storage?
A) To store data on a local computer
B) To store data on remote servers accessible via the internet
C) To store software applications
D) To speed up the computer's processing
Explanation: Cloud storage allows users to store and access data remotely via the internet, rather than on local devices.
Question 16: What is the role of a motherboard in a computer?
A) To connect and allow communication between all of the computer's components
B) To store all of the computer's data permanently
C) To supply power to the computer
D) To output data to the screen
Explanation: The motherboard connects all the components of the computer and allows communication between them.
Question 17: What is an example of an operating system for mobile devices?
A) Windows
B) Android
C) Mac OS
D) Linux
Explanation: Android is a widely used mobile operating system for smartphones and tablets.
Question 18: What is the function of a graphics card in a computer?
A) To control the computer's overall performance
B) To render images and videos for display on the monitor
C) To store data permanently
D) To connect the computer to external networks
Explanation: The graphics card is responsible for rendering images, videos, and animations for display on the monitor.
Question 19: What is the primary function of the BIOS in a computer?
A) To initialize hardware during boot-up
B) To store user data permanently
C) To process instructions from software programs
D) To manage internet connections
Explanation: The BIOS (Basic Input/Output System) initializes hardware components during the computer's boot-up process.
Question 20: What does the term "binary code" refer to?
A) A system of ones and zeros used to represent data in a computer
B) A type of machine language used for running software
C) A coding language used to build websites
D) A method for encrypting data for secure storage
Explanation: Binary code uses a series of ones and zeros to represent data and instructions in computers.
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