Q31. What type of memory is used for permanent data storage in computers?
a) RAM
b) Cache
c) ROM
d) Registers
Show Answer
Correct Answer: c) ROM
Explanation: ROM (Read-Only Memory) is non-volatile memory used for permanent data storage. It retains data even when the computer is powered off, typically storing firmware or system software.
Q32. Which generation of computers introduced the use of microprocessors?
a) First generation
b) Second generation
c) Third generation
d) Fourth generation
Show Answer
Correct Answer: d) Fourth generation
Explanation: The fourth generation of computers, beginning in the early 1970s, introduced the use of microprocessors, which integrated all components of the CPU onto a single chip, making computers smaller and more powerful.
Q33. Which device allows a user to interact with graphical elements on a computer screen?
a) Keyboard
b) Monitor
c) Mouse
d) Scanner
Show Answer
Correct Answer: c) Mouse
Explanation: A mouse is an input device that allows users to interact with graphical elements on a computer screen, such as icons, buttons, and menus, by moving the cursor and clicking.
Q34. What does the term ‘booting’ refer to in computing?
a) Shutting down the computer
b) Restarting the computer
c) Loading the operating system into memory
d) Installing software
Show Answer
Correct Answer: c) Loading the operating system into memory
Explanation: Booting is the process of starting a computer by loading the operating system into memory from the hard drive or another storage device, allowing the computer to become operational.
Q35. What is the primary purpose of a computer’s motherboard?
a) To process data
b) To store data
c) To connect all the components of the computer
d) To output data
Show Answer
Correct Answer: c) To connect all the components of the computer
Explanation: The motherboard is the main circuit board in a computer that connects all the components, including the CPU, memory, storage devices, and input/output peripherals, allowing them to communicate and function together.
Q36. What is an example of a graphical user interface (GUI) feature?
a) Command-line interface
b) Text-based menus
c) Icons and windows
d) Batch processing
Show Answer
Correct Answer: c) Icons and windows
Explanation: A graphical user interface (GUI) uses visual elements like icons, windows, and buttons, allowing users to interact with the computer through direct manipulation, making it more intuitive than text-based interfaces.
Q37. What is a ‘bit’ in computer terminology?
a) A binary digit
b) A small piece of data
c) A unit of processing speed
d) A storage device
Show Answer
Correct Answer: a) A binary digit
Explanation: A ‘bit’ (short for binary digit) is the smallest unit of data in a computer, represented as either a 0 or 1. Bits are the basic building blocks of all digital information processed by computers.
Q38. Which of the following is an example of system software?
a) Microsoft Word
b) Adobe Photoshop
c) Windows OS
d) VLC Media Player
Show Answer
Correct Answer: c) Windows OS
Explanation: System software, like Windows OS, manages the computer’s hardware and software resources, providing a platform for application software to run. It includes operating systems, device drivers, and utility programs.
Q39. What is the main function of a computer’s hard drive?
a) To temporarily store data
b) To permanently store data
c) To execute programs
d) To display data
Show Answer
Correct Answer: b) To permanently store data
Explanation: A hard drive is a non-volatile storage device used to store data permanently. It retains data even when the computer is turned off, unlike RAM, which is volatile and only stores data temporarily.
Q40. Which of the following is a mobile operating system?
a) Windows
b) Linux
c) Android
d) macOS
Show Answer
Correct Answer: c) Android
Explanation: Android is a mobile operating system developed by Google, designed specifically for touchscreen mobile devices like smartphones and tablets. It is based on the Linux kernel and is widely used worldwide.