Q71. What is the main purpose of a surge protector?
a) To protect computers from power surges
b) To increase processing speed
c) To store backup data
d) To clean the computer’s registry
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Correct Answer: a) To protect computers from power surges
Explanation: A surge protector is a device that protects electronic equipment, including computers, from power surges and spikes, which can damage sensitive components and cause data loss.
Q72. What is the function of a modem in a computer network?
a) To convert digital data into analog signals and vice versa
b) To store large amounts of data
c) To process graphics
d) To print documents
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Correct Answer: a) To convert digital data into analog signals and vice versa
Explanation: A modem (modulator-demodulator) is a device that converts digital data from a computer into analog signals for transmission over telephone lines and vice versa, enabling internet connectivity.
Q73. Which of the following storage devices has the largest capacity?
a) Floppy Disk
b) CD-ROM
c) Hard Drive
d) USB Flash Drive
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Correct Answer: c) Hard Drive
Explanation: A hard drive typically has the largest storage capacity among the listed devices, capable of storing terabytes (TB) of data, while floppy disks, CD-ROMs, and USB flash drives have much smaller capacities.
Q74. What does the term ‘latency’ refer to in a computer network?
a) The speed of data transmission
b) The delay in data transmission
c) The amount of data transmitted
d) The quality of the network connection
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Correct Answer: b) The delay in data transmission
Explanation: Latency refers to the delay or time taken for data to travel from the source to the destination across a network. Lower latency is desirable for faster and more responsive network performance.
Q75. What is the role of a network switch in a LAN (Local Area Network)?
a) To connect multiple devices within a network
b) To store data
c) To provide internet access
d) To block unauthorized access
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Correct Answer: a) To connect multiple devices within a network
Explanation: A network switch is a device that connects multiple devices, such as computers, printers, and servers, within a LAN, allowing them to communicate and share resources.
Q76. What does the term ‘booting’ refer to in computing?
a) Installing new software
b) Shutting down the computer
c) Starting up the computer
d) Formatting a hard drive
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Correct Answer: c) Starting up the computer
Explanation: Booting refers to the process of starting up a computer and loading the operating system into memory, enabling the computer to become operational and ready for use.
Q77. What is the purpose of a firewall in computer security?
a) To store backup data
b) To prevent unauthorized access to or from a private network
c) To increase processing speed
d) To repair damaged files
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Correct Answer: b) To prevent unauthorized access to or from a private network
Explanation: A firewall is a security system that monitors and controls incoming and outgoing network traffic, preventing unauthorized access to or from a private network, thereby protecting the system from potential threats.
Q78. Which of the following file extensions indicates an executable file in Windows?
a) .txt
b) .exe
c) .jpg
d) .pdf
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Correct Answer: b) .exe
Explanation: The .exe file extension indicates an executable file in Windows, which contains a program that can be run or executed on the computer.
Q79. What is the function of a CPU cache?
a) To store data permanently
b) To enhance internet speed
c) To temporarily store frequently accessed data for quick retrieval
d) To manage network connections
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Correct Answer: c) To temporarily store frequently accessed data for quick retrieval
Explanation: A CPU cache is a small, fast memory located close to the CPU that temporarily stores frequently accessed data, allowing the CPU to retrieve it quickly and improve processing speed.
Q80. What does the term ‘backup’ refer to in computing?
a) Creating a duplicate copy of data to prevent loss
b) Installing a new operating system
c) Deleting unnecessary files
d) Updating software
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Correct Answer: a) Creating a duplicate copy of data to prevent loss
Explanation: A backup refers to the process of creating a duplicate copy of data, files, or system configurations, which can be used to restore the original in case of data loss, corruption, or hardware failure.