Q41. Which of the following is considered the “brain” of the computer?
a) Monitor
b) RAM
c) Hard Drive
d) CPU
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Correct Answer: d) CPU
Explanation: The CPU (Central Processing Unit) is considered the “brain” of the computer because it performs most of the processing tasks, executing instructions from programs and controlling other components.
Q42. What does the acronym USB stand for?
a) Universal Storage Bus
b) Unified Serial Bus
c) Universal Serial Bus
d) Uniform Storage Bus
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Correct Answer: c) Universal Serial Bus
Explanation: USB stands for Universal Serial Bus, a standard interface used for connecting peripheral devices to a computer, such as keyboards, mice, printers, and external storage devices.
Q43. What is the function of cache memory in a computer?
a) To permanently store data
b) To temporarily store frequently accessed data
c) To process data
d) To output data
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Correct Answer: b) To temporarily store frequently accessed data
Explanation: Cache memory is a small, high-speed memory located close to the CPU that temporarily stores frequently accessed data and instructions, allowing for faster retrieval and improved processing efficiency.
Q44. Which of the following is a type of non-volatile memory?
a) RAM
b) ROM
c) Cache
d) Registers
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Correct Answer: b) ROM
Explanation: ROM (Read-Only Memory) is a type of non-volatile memory that retains data even when the computer is powered off. It typically stores firmware or system software that is not intended to be modified.
Q45. Which of the following is an example of proprietary software?
a) Linux
b) Apache HTTP Server
c) Microsoft Office
d) Mozilla Firefox
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Correct Answer: c) Microsoft Office
Explanation: Proprietary software, like Microsoft Office, is owned by a company and is not freely available for modification or distribution. Users must purchase a license to use the software.
Q46. What does GUI stand for?
a) General User Interface
b) Graphical User Interface
c) Global User Interface
d) Generic User Interface
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Correct Answer: b) Graphical User Interface
Explanation: GUI stands for Graphical User Interface, a type of user interface that allows users to interact with the computer through graphical elements like icons, windows, and buttons, making it more user-friendly than text-based interfaces.
Q47. Which type of software directly interacts with hardware to execute tasks?
a) Application software
b) System software
c) Utility software
d) Firmware
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Correct Answer: b) System software
Explanation: System software, including the operating system and device drivers, interacts directly with the hardware to manage resources and execute tasks, providing a platform for application software to run.
Q48. What is the role of a network interface card (NIC) in a computer?
a) To connect to the internet
b) To process data
c) To store data
d) To display graphics
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Correct Answer: a) To connect to the internet
Explanation: A network interface card (NIC) is a hardware component that allows a computer to connect to a network, such as the internet or a local area network (LAN), enabling communication with other devices.
Q49. Which of the following devices is used to output sound from a computer?
a) Monitor
b) Printer
c) Speaker
d) Scanner
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Correct Answer: c) Speaker
Explanation: A speaker is an output device that converts digital audio signals from the computer into sound, allowing users to hear audio from their computer, such as music, voice, and other sounds.
Q50. What is the main advantage of using SSDs over traditional hard drives?
a) Higher storage capacity
b) Lower cost
c) Faster data access and reliability
d) Easier to repair
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Correct Answer: c) Faster data access and reliability
Explanation: SSDs (Solid State Drives) offer faster data access speeds and greater reliability compared to traditional hard drives because they have no moving parts, reducing the risk of mechanical failure and improving performance.