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 #31
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Which is the fastest memory in a computer system?
Correct Answer: Option A
Explanation:
CPU registers offer the highest speed access.
CPU registers offer the highest speed access.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #32
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The CU generates:
Correct Answer: Option B
Explanation:
Control signals direct the operation of other CPU components.
Control signals direct the operation of other CPU components.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #33
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A dual-core processor has:
Correct Answer: Option C
Explanation:
It integrates two independent processing cores on one chip.
It integrates two independent processing cores on one chip.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #34
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Stack Pointer is a type of:
Correct Answer: Option C
Explanation:
It points to the top of the stack in memory for function calls.
It points to the top of the stack in memory for function calls.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #35
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Pipelining in CPU improves performance by:
Correct Answer: Option C
Explanation:
It allows multiple instructions to be processed in different stages concurrently.
It allows multiple instructions to be processed in different stages concurrently.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #36
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The term 'word size' in CPU refers to:
Correct Answer: Option C
Explanation:
It determines the processor's data handling capacity.
It determines the processor's data handling capacity.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #37
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Which unit decodes machine instructions?
Correct Answer: Option B
Explanation:
The Control Unit handles instruction decoding.
The Control Unit handles instruction decoding.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #38
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Immediate addressing mode uses data directly from:
Correct Answer: Option D
Explanation:
Operand is embedded in the instruction.
Operand is embedded in the instruction.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #39
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The primary purpose of the Status Register is to:
Correct Answer: Option D
Explanation:
It contains flags reflecting CPU state after arithmetic/logic ops.
It contains flags reflecting CPU state after arithmetic/logic ops.
This question belongs to:
Computer
CPU (Central Processing Unit)
Question #40
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Superscalar architecture allows:
Correct Answer: Option C
Explanation:
It executes more than one instruction per clock cycle.
It executes more than one instruction per clock cycle.
This question belongs to:
Computer
CPU (Central Processing Unit)
