Central Processing Unit (CPU) MCQs

What is the primary function of the Central Processing Unit (CPU)?
- A) To store data
- B) To execute instructions and process data
- C) To manage power supply
- D) To render graphics
  Answer: B
Which component within the CPU is responsible for performing arithmetic and logical operations?
- A) Control Unit
- B) Arithmetic Logic Unit (ALU)
- C) Registers
- D) Cache
  Answer: B
What does the Control Unit (CU) of the CPU do?
- A) Perform arithmetic operations
- B) Direct and coordinate the activities of other CPU components
- C) Store frequently used data
- D) Manage external devices
  Answer: B
Which CPU component temporarily holds data and instructions during processing?
- A) ALU
- B) Register
- C) Cache
- D) Memory
  Answer: B
What is the purpose of CPU cache?
- A) To provide long-term data storage
- B) To speed up access to frequently used data and instructions
- C) To manage power supply
- D) To handle external device connections
  Answer: B
Which unit in the CPU is responsible for managing and executing instructions?
- A) Arithmetic Logic Unit (ALU)
- B) Control Unit (CU)
- C) Register
- D) Cache
  Answer: B
What is the function of a CPU register?
- A) To perform arithmetic operations
- B) To store data temporarily for quick access during processing
- C) To manage memory
- D) To connect external devices
  Answer: B
What does the term ‘clock speed’ refer to in relation to the CPU?
- A) The number of cores in the CPU
- B) The amount of cache memory
- C) The frequency at which the CPU executes instructions
- D) The size of the CPU chip
  Answer: C
Which type of CPU architecture uses multiple cores to perform parallel processing?
- A) Single-core
- B) Dual-core
- C) Multi-core
- D) Hyper-threaded
  Answer: C
What is the purpose of the CPU’s instruction set architecture (ISA)?
- A) To provide power to the CPU
- B) To define the set of instructions that the CPU can execute
- C) To manage data storage
- D) To connect external peripherals
  Answer: B
What does the term ‘hyper-threading’ refer to in CPU technology?
- A) The ability of a CPU to handle multiple threads simultaneously
- B) The speed at which the CPU executes instructions
- C) The size of the CPU cache
- D) The number of cores in the CPU
  Answer: A
Which component of the CPU is responsible for controlling the flow of data between the CPU and other hardware components?
- A) Arithmetic Logic Unit (ALU)
- B) Control Unit (CU)
- C) Register
- D) Cache
  Answer: B
Which of the following is a common unit of measurement for CPU clock speed?
- A) Bytes
- B) Hertz (Hz)
- C) Megabytes (MB)
- D) Gigabytes (GB)
  Answer: B
What is the main role of the Arithmetic Logic Unit (ALU) in the CPU?
- A) To perform mathematical and logical operations
- B) To manage memory
- C) To control external devices
- D) To store data temporarily
  Answer: A
Which type of CPU cache is the smallest and fastest, located closest to the CPU core?
- A) L1 Cache
- B) L2 Cache
- C) L3 Cache
- D) L4 Cache
  Answer: A
What does the term ‘multi-core’ refer to in CPUs?
- A) A CPU with multiple cache levels
- B) A CPU with more than one processing unit (core)
- C) A CPU with higher clock speed
- D) A CPU with hyper-threading capabilities
  Answer: B
Which CPU component is responsible for fetching and decoding instructions?
- A) Arithmetic Logic Unit (ALU)
- B) Control Unit (CU)
- C) Register
- D) Cache
  Answer: B
What is the role of the CPU’s fetch-decode-execute cycle?
- A) To manage data storage
- B) To execute and process instructions in a sequence
- C) To connect external devices
- D) To manage power supply
  Answer: B
Which component in a CPU helps in improving performance by reducing the time required to access frequently used data?
- A) Register
- B) Cache
- C) ALU
- D) Control Unit
  Answer: B
What does the term ‘overclocking’ mean in the context of CPU performance?
- A) Increasing the clock speed of the CPU beyond its standard specifications
- B) Adding more cores to the CPU
- C) Increasing the size of the CPU cache
- D) Enhancing the CPU’s power efficiency
  Answer: A
Which type of CPU architecture includes multiple cores on a single chip to handle more tasks simultaneously?
- A) Single-core
- B) Dual-core
- C) Multi-core
- D) Hyper-threaded
  Answer: C
What is the function of the CPU’s arithmetic logic unit (ALU)?
- A) To handle graphics rendering
- B) To execute instructions from memory
- C) To perform arithmetic and logical operations
- D) To manage data transfer
  Answer: C
Which CPU component stores the address of the next instruction to be executed?
- A) Program Counter
- B) Accumulator
- C) Stack Pointer
- D) Instruction Register
  Answer: A
What is the purpose of the CPU’s instruction register?
- A) To hold the address of the next instruction
- B) To store the current instruction being executed
- C) To manage external devices
- D) To provide power to the CPU
  Answer: B
Which CPU technology allows a single core to handle multiple threads of execution simultaneously?
- A) Multi-core
- B) Hyper-threading
- C) Overclocking
- D) Virtualization
  Answer: B
What is the role of the CPU’s system bus?
- A) To manage power supply
- B) To connect and transfer data between the CPU and other hardware components
- C) To store data
- D) To render graphics
  Answer: B
What does the term ‘system clock’ refer to in CPU operations?
- A) The speed of the CPU’s clock cycle
- B) The number of cores in the CPU
- C) The size of the CPU cache
- D) The type of CPU architecture
  Answer: A
Which part of the CPU handles the coordination of data flow within the computer system?
- A) Arithmetic Logic Unit (ALU)
- B) Control Unit (CU)
- C) Register
- D) Cache
  Answer: B
What is the main purpose of CPU registers?
- A) To store data temporarily during processing
- B) To manage power supply
- C) To connect external devices
- D) To render graphics
  Answer: A
Which CPU feature allows multiple instructions to be processed simultaneously?
- A) Multi-core
- B) Hyper-threading
- C) Overclocking
- D) Virtualization
  Answer: B
What does the ‘clock cycle’ of a CPU refer to?
- A) The amount of time it takes to process a single instruction
- B) The frequency of the CPU’s clock signal
- C) The number of cores in the CPU
- D) The size of the CPU cache
  Answer: B
Which type of CPU memory is the fastest and closest to the CPU core?
- A) L1 Cache
- B) L2 Cache
- C) L3 Cache
- D) Main Memory
  Answer: A
Which component of the CPU is responsible for executing arithmetic and logical operations?
- A) Control Unit (CU)
- B) Arithmetic Logic Unit (ALU)
- C) Register
- D) Cache
  Answer: B
What is the role of the CPU’s ALU in handling data?
- A) To execute instructions
- B) To store data
- C) To perform arithmetic and logical operations
- D) To manage power
  Answer: C
Which of the following is a common unit for measuring CPU clock speed?
- A) Gigabytes (GB)
- B) Hertz (Hz)
- C) Megabytes (MB)
- D) Bytes
  Answer: B
Which of the following is an example of a CPU instruction?
- A) ADD
- B) L1 Cache
- C) ROM
- D) Hard Drive
  Answer: A
What does the ‘bus’ in computer architecture refer to?
- A) The pathway used for data transfer between CPU and other components
- B) A storage device
- C) A cooling system
- D) A power supply unit
  Answer: A
Which CPU component is responsible for fetching instructions from memory?
- A) Control Unit (CU)
- B) Arithmetic Logic Unit (ALU)
- C) Register
- D) Cache
  Answer: A
What does the term ‘pipeline’ refer to in CPU architecture?
- A) The technique of processing multiple instructions simultaneously
- B) The size of the CPU cache
- C) The number of CPU cores
- D) The CPU’s clock speed
  Answer: A
Which CPU feature improves processing speed by allowing multiple instructions to be processed at different stages simultaneously?
- A) Pipelining
- B) Hyper-threading
- C) Multi-core processing
- D) Overclocking
  Answer: A
Which type of CPU cache is typically the largest and located furthest from the CPU core?
- A) L1 Cache
- B) L2 Cache
- C) L3 Cache
- D) L4 Cache
  Answer: C
What is the primary role of the CPU’s bus interface unit?
- A) To manage memory access
- B) To facilitate communication between the CPU and other hardware components
- C) To perform arithmetic operations
- D) To control external devices
  Answer: B
What does the ‘instruction cycle’ in a CPU refer to?
- A) The process of fetching, decoding, and executing an instruction
- B) The speed of the CPU’s clock
- C) The number of cores in the CPU
- D) The size of the CPU cache
  Answer: A
Which CPU unit is responsible for managing the sequence of operations and controlling other components?
- A) Arithmetic Logic Unit (ALU)
- B) Control Unit (CU)
- C) Cache
- D) Register
  Answer: B
What is the purpose of the CPU’s arithmetic logic unit (ALU)?
- A) To execute data processing instructions
- B) To fetch instructions from memory
- C) To manage the flow of data between components
- D) To perform arithmetic and logical operations
  Answer: D

Which unit in the CPU manages the execution of instructions?
- A) Control Unit (CU)
- B) Arithmetic Logic Unit (ALU)
- C) Cache
- D) Register
  Answer: A
Which component of the CPU helps to execute multiple instructions simultaneously by splitting them into smaller tasks?
- A) Pipelining
- B) Multi-core processing
- C) Hyper-threading
- D) Overclocking
  Answer: A
What does the ‘fetch-decode-execute’ cycle in the CPU refer to?
- A) The process of transferring data to the hard drive
- B) The process of fetching an instruction, decoding it, and executing it
- C) The process of cooling the CPU
- D) The process of managing external devices
  Answer: B
What is the role of the CPU’s program counter?
- A) To store the address of the next instruction to be executed
- B) To perform arithmetic operations
- C) To manage memory access
- D) To connect external devices
  Answer: A
Which feature of the CPU allows it to handle more tasks simultaneously by managing multiple threads?
- A) Multi-core processing
- B) Hyper-threading
- C) Pipelining
- D) Overclocking
  Answer: B

Central Processing Unit (CPU) MCQs
By: Prof. Dr. Fazal Rehman Shamil | Last updated: September 20, 2024

Read More Computer Architecture MCQs

Related Posts: