A) CPU
B) Motherboard
C) RAM
D) Hard Drive
Correct Answer: A) CPU
Explanation: The CPU (Central Processing Unit) is often referred to as the brain of the computer because it performs all the instructions of a computer program by carrying out basic arithmetic, logic, control, and input/output operations.
A) Control input/output devices
B) Perform arithmetic and logical operations
C) Manage memory
D) Store data
Correct Answer: B) Perform arithmetic and logical operations
Explanation: The ALU is responsible for performing all arithmetic and logic operations within the CPU, such as addition, subtraction, and logical comparisons.
A) ROM
B) Cache
C) RAM
D) SSD
Correct Answer: A) ROM
Explanation: ROM (Read-Only Memory) is non-volatile memory that stores firmware, which is essential for booting the computer and performing basic operations.
A) Power Strip
B) Circuit Breaker
C) Surge Protector
D) UPS
Correct Answer: D) UPS
Explanation: A UPS (Uninterruptible Power Supply) provides emergency power to a computer during a power outage, allowing users to save their work and shut down the computer safely.
A) USB
B) HDMI
C) VGA
D) Ethernet
Correct Answer: D) Ethernet
Explanation: An Ethernet port is used to connect a computer to a wired network for internet access and communication with other networked devices.
A) More moving parts
B) More susceptible to physical damage
C) Slower read/write speed
D) Faster data access
Correct Answer: D) Faster data access
Explanation: SSDs (Solid State Drives) have no moving parts and provide faster data access and read/write speeds compared to traditional HDDs (Hard Disk Drives).
A) CPU
B) RAM
C) SSD
D) GPU
Correct Answer: D) GPU
Explanation: The GPU (Graphics Processing Unit) is responsible for rendering images, videos, and animations by processing the necessary graphics computations.
A) NIC
B) Heat Sink
C) PSU
D) HDD
Correct Answer: B) Heat Sink
Explanation: A heat sink is a passive cooling device that dissipates heat generated by the CPU to maintain optimal operating temperatures.
A) Cache
B) RAM
C) ROM
D) SSD
Correct Answer: B) RAM
Explanation: RAM (Random Access Memory) is volatile memory that stores data for active processes, allowing the CPU to access information quickly.
A) A data transmission pathway
B) A peripheral device
C) A type of software
D) A storage device
Correct Answer: A) A data transmission pathway
Explanation: In computer hardware, a “bus” refers to a data transmission pathway that transfers data between different components within the computer.
A) Switch
B) Router
C) Hub
D) Modem
Correct Answer: D) Modem
Explanation: A modem (modulator-demodulator) converts digital signals from a computer into analog signals for transmission over a phone line and vice versa.
A) VGA
B) PCIe
C) SATA
D) ATX
Correct Answer: D) ATX
Explanation: An ATX (Advanced Technology eXtended) power connector is used to connect the power supply unit to the motherboard, providing power to the computer’s components.
A) Store user data
B) Perform the POST (Power-On Self-Test)
C) Manage memory
D) Control peripheral devices
Correct Answer: B) Perform the POST (Power-On Self-Test)
Explanation: The BIOS (Basic Input/Output System) performs the POST (Power-On Self-Test) to check the computer’s hardware before booting the operating system.
A) Flash
B) SRAM
C) DRAM
D) ROM
Correct Answer: C) DRAM
Explanation: DRAM (Dynamic Random Access Memory) requires periodic refreshing to retain its contents, unlike SRAM (Static Random Access Memory), which does not need refreshing.
A) AGP
B) PCIe
C) SATA
D) ISA
Correct Answer: B) PCIe
Explanation: PCIe (Peripheral Component Interconnect Express) slots are commonly used for installing graphics cards, offering high-speed data transfer between the card and the motherboard.
A) RAM
B) Flash Drive
C) SSD
D) HDD
Correct Answer: D) HDD
Explanation: HDDs (Hard Disk Drives) use magnetic storage to store data on spinning disks, making them susceptible to physical damage but offering large storage capacities at a lower cost.
A) Store data
B) Control input/output devices
C) Supply power to the components
D) Manage network connections
Correct Answer: C) Supply power to the components
Explanation: The PSU (Power Supply Unit) converts electrical power from the outlet into usable power for the computer’s internal components.
A) EEPROM
B) Flash Memory
C) RAM
D) Cache
Correct Answer: A) EEPROM
Explanation: EEPROM (Electrically Erasable Programmable Read-Only Memory) is used to store BIOS settings on a motherboard, allowing for easy updates and modifications.
A) PCIe Slot
B) USB Controller
C) NIC
D) Heat Sink
Correct Answer: B) USB Controller
Explanation: A USB controller manages the connection between the computer and external peripherals, such as keyboards, mice, and USB drives.
A) Display images on the monitor
B) Provide power to the CPU
C) Store data permanently
D) Connect and allow communication between various components
Correct Answer: D) Connect and allow communication between various components
Explanation: The motherboard serves as the main circuit board, connecting the CPU, RAM, storage devices, and other components, facilitating communication between them.
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