Q51. What is the purpose of a firewall in a computer network?
a) To process data faster
b) To connect devices
c) To prevent unauthorized access
d) To increase storage capacity
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Correct Answer: c) To prevent unauthorized access
Explanation: A firewall is a security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules, helping to prevent unauthorized access to or from a private network.
Q52. Which of the following is NOT a function of an operating system?
a) Managing hardware resources
b) Running application software
c) Controlling input and output devices
d) Designing websites
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Correct Answer: d) Designing websites
Explanation: An operating system’s functions include managing hardware resources, running application software, and controlling input and output devices. Designing websites is not a function of an operating system but of web development software.
Q53. What type of software is designed to perform routine maintenance tasks on a computer?
a) System software
b) Application software
c) Utility software
d) Network software
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Correct Answer: c) Utility software
Explanation: Utility software is designed to perform routine maintenance tasks on a computer, such as disk cleanup, antivirus scanning, file management, and system backups, helping to maintain and optimize the computer’s performance.
Q54. What is the main function of a computer’s BIOS?
a) To load the operating system
b) To store user files
c) To process data
d) To manage network connections
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Correct Answer: a) To load the operating system
Explanation: The BIOS (Basic Input/Output System) initializes and tests the hardware during the booting process and loads the operating system into memory, enabling the computer to start up.
Q55. Which of the following is an example of input and output device combined in one?
a) Keyboard
b) Monitor
c) Touchscreen
d) Printer
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Correct Answer: c) Touchscreen
Explanation: A touchscreen is a device that functions as both an input and output device. Users can interact with the screen directly by touching it, while the screen also displays visual output.
Q56. What does the term ‘bit rate’ refer to in digital communications?
a) The amount of data stored
b) The speed at which data is transmitted
c) The capacity of a storage device
d) The size of a file
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Correct Answer: b) The speed at which data is transmitted
Explanation: Bit rate refers to the speed at which data is transmitted over a network or communication channel, usually measured in bits per second (bps).
Q57. Which of the following is a characteristic of a microprocessor?
a) High power consumption
b) Large physical size
c) Performs arithmetic and logical operations
d) Slow processing speed
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Correct Answer: c) Performs arithmetic and logical operations
Explanation: A microprocessor is a small, integrated circuit that performs arithmetic and logical operations as part of the CPU, enabling the execution of instructions in a computer.
Q58. What is the difference between a ‘cold boot’ and a ‘warm boot’?
a) Cold boot refers to turning on the computer from an off state, while warm boot refers to restarting the computer
b) Cold boot refers to restarting the computer, while warm boot refers to shutting it down
c) Cold boot refers to booting a new operating system, while warm boot refers to updating software
d) Cold boot and warm boot are the same
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Correct Answer: a) Cold boot refers to turning on the computer from an off state, while warm boot refers to restarting the computer
Explanation: A cold boot involves turning on the computer from a completely powered-off state, while a warm boot involves restarting the computer without completely powering it down.
Q59. Which of the following is a cloud storage service?
a) Dropbox
b) SSD
c) HDD
d) RAM
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Correct Answer: a) Dropbox
Explanation: Dropbox is a cloud storage service that allows users to store, sync, and share files online. It provides remote access to files from various devices over the internet.
Q60. Which of the following is NOT a characteristic of open-source software?
a) The source code is publicly available
b) It can be freely modified and redistributed
c) It is always free of cost
d) It encourages collaboration among developers
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Correct Answer: c) It is always free of cost
Explanation: While open-source software is often available for free, it is not always free of cost. Some open-source software may require payment for certain features or support, but the source code remains accessible for modification and redistribution.