Which of the following are correct? The principal components of a CPU in a computer include which of the following?

1.The Solid-State Drive (SSD) that stores data persistently, typically using flash memory

2.The Arithmetic Logic Unit (ALU) that performs arithmetic and logic operations

3.Processor registers that supply operands to the ALU and store the results of ALU operations

4.The Control Unit (CU) that orchestrates the fetching, decoding and execution of instructions

A1, 2 & 3 only

B2, 3 & 4 only ✓ Correct

C2 & 3 only

D1 & 4 only

Correct answer: (B) 2, 3 & 4 only

Explanation

A CPU's principal components are the arithmetic logic unit, the processor registers and the control unit.

Statement 1 is wrong because a solid state drive is external storage, not a part of the processor.

Statement 2 is correct as the arithmetic logic unit performs all arithmetic and logic operations.

Statement 3 is correct since registers feed operands to the ALU and hold its results.

Statement 4 is correct because the control unit fetches, decodes and directs execution of instructions.

Modern CPUs also include cache memory that sits much closer to the core than main memory.

Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.