Q41. Which type of cable is used to connect external devices to a computer via USB ports?
a) Ethernet
b) VGA
c) USB
d) HDMI
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Correct Answer: c) USB
Explanation: USB cables are used to connect external devices, such as printers, keyboards, and mice, to a computer through USB ports.
Q42. What does the acronym GPU stand for?
a) General Processing Unit
b) Graphics Processing Unit
c) General Purpose Unit
d) Graphical Processing Unit
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Correct Answer: b) Graphics Processing Unit
Explanation: GPU stands for Graphics Processing Unit. It is specialized hardware designed to accelerate the rendering of images and video, handling graphical computations.
Q43. What is the function of a computer’s sound card?
a) To provide video output
b) To manage network connections
c) To handle audio input and output
d) To process data
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Correct Answer: c) To handle audio input and output
Explanation: A sound card is responsible for processing audio data, allowing for sound input (such as from a microphone) and output (such as to speakers or headphones).
Q44. Which type of connector is used for connecting a monitor to a computer with high resolution?
a) VGA
b) HDMI
c) USB
d) Audio jack
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Correct Answer: b) HDMI
Explanation: HDMI connectors provide high-resolution video and audio signals, making them suitable for connecting monitors and other high-definition display devices.
Q45. What is the primary function of a computer’s thermal paste?
a) To clean the CPU
b) To enhance graphics performance
c) To improve heat transfer between the CPU and heat sink
d) To increase storage capacity
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Correct Answer: c) To improve heat transfer between the CPU and heat sink
Explanation: Thermal paste is applied between the CPU and heat sink to improve heat transfer and ensure effective cooling of the CPU.
Q46. What is the main advantage of using DDR4 RAM over DDR3 RAM?
a) Higher data transfer rates and lower power consumption
b) Larger storage capacity
c) Better cooling
d) Greater compatibility with older systems
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Correct Answer: a) Higher data transfer rates and lower power consumption
Explanation: DDR4 RAM offers higher data transfer rates and lower power consumption compared to DDR3 RAM, improving overall system performance and efficiency.
Q47. What type of device is a network router?
a) Storage device
b) Input device
c) Network device
d) Output device
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Correct Answer: c) Network device
Explanation: A network router is a network device that routes data between different networks, allowing multiple devices to connect to the internet or communicate with each other.
Q48. Which type of connector is used to connect a computer to a local area network (LAN)?
a) USB
b) HDMI
c) RJ-45
d) VGA
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Correct Answer: c) RJ-45
Explanation: RJ-45 connectors are used for Ethernet cables to connect computers and other devices to a local area network (LAN).
Q49. What does the acronym HDD stand for in computer storage?
a) High-Density Drive
b) Hard Disk Drive
c) High-Definition Disk
d) Hard Data Drive
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Correct Answer: b) Hard Disk Drive
Explanation: HDD stands for Hard Disk Drive, a type of storage device that uses spinning disks and magnetic storage to store data.
Q50. What is the primary role of a computer’s BIOS during the boot process?
a) To manage file systems
b) To initialize hardware and load the operating system
c) To execute applications
d) To handle network traffic
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Correct Answer: b) To initialize hardware and load the operating system
Explanation: The BIOS initializes and tests hardware components during the boot process and loads the operating system into memory, enabling the computer to start.