CPU (Central Processing Unit) MCQs
Practice CPU MCQs with answers and explanations covering ALU, CU, registers, processors and central processing unit concepts frequently asked in competitive exams.
Question #1
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The Central Processing Unit (CPU) is also known as the:
Correct Answer: Option B
Explanation:
The CPU is referred to as the brain of the computer as it performs all major processing tasks.
The CPU is referred to as the brain of the computer as it performs all major processing tasks.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #2
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Which of the following is NOT a main component of the CPU?
Correct Answer: Option A
Explanation:
RAM is primary memory outside the CPU, while ALU, CU, and Registers are integral parts of the CPU.
RAM is primary memory outside the CPU, while ALU, CU, and Registers are integral parts of the CPU.
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Computer
CPU (Central Processing Unit)
Question #3
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The Arithmetic Logic Unit (ALU) primarily performs:
Correct Answer: Option A
Explanation:
ALU executes arithmetic operations like addition and logical operations like AND, OR.
ALU executes arithmetic operations like addition and logical operations like AND, OR.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #4
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The Control Unit (CU) in CPU is responsible for:
Correct Answer: Option A
Explanation:
CU fetches, decodes instructions and generates control signals for other components.
CU fetches, decodes instructions and generates control signals for other components.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #5
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Processor registers are used to:
Correct Answer: Option A
Explanation:
Registers provide fast temporary storage within the CPU for quick access by ALU.
Registers provide fast temporary storage within the CPU for quick access by ALU.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #6
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Which component of CPU acts as the manager directing the flow of data?
Correct Answer: Option C
Explanation:
The Control Unit manages and synchronizes the operations of the CPU.
The Control Unit manages and synchronizes the operations of the CPU.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #7
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The full form of ALU is:
Correct Answer: Option B
Explanation:
ALU stands for Arithmetic Logic Unit, handling math and logic in the CPU.
ALU stands for Arithmetic Logic Unit, handling math and logic in the CPU.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #8
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In the instruction cycle, the first step is usually:
Correct Answer: Option D
Explanation:
The CPU fetches the instruction from memory as the initial step of the fetch-decode-execute cycle.
The CPU fetches the instruction from memory as the initial step of the fetch-decode-execute cycle.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #9
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Which of the following is a type of register that holds the address of the next instruction?
Correct Answer: Option D
Explanation:
The Program Counter (PC) keeps track of the address of the next instruction to be executed.
The Program Counter (PC) keeps track of the address of the next instruction to be executed.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #10
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Modern CPUs often include multiple cores to:
Correct Answer: Option C
Explanation:
Multi-core processors allow simultaneous execution of instructions for better performance.
Multi-core processors allow simultaneous execution of instructions for better performance.
This question belongs to:
Computer
CPU (Central Processing Unit)
