Question

How many stages are there in Pipeline included in a RISC processor?

• A. 4
• B. 5
• C. 6
• D. 16

Hint:

Standard RISC Pipeline: IF \(\rightarrow\) ID \(\rightarrow\) EX \(\rightarrow\) MEM \(\rightarrow\) WB Total Stages = 5

Answer 1

The Correct Option is B

Concept: RISC (Reduced Instruction Set Computer) processors commonly use a five-stage instruction pipeline. Pipelining improves processor performance by allowing multiple instructions to overlap during execution. Each stage performs a specific task.

Step 1: Recall the five stages of a RISC pipeline.
The standard RISC pipeline consists of: \[ \text{IF} \] Instruction Fetch \[ \text{ID} \] Instruction Decode \[ \text{EX} \] Execute \[ \text{MEM} \] Memory Access \[ \text{WB} \] Write Back

Step 2: Count the stages.
The stages are:
• Instruction Fetch
• Instruction Decode
• Execute
• Memory Access
• Write Back Thus there are \[ 5 \] pipeline stages.

Step 3: Write the conclusion.
Therefore the number of pipeline stages in a standard RISC processor is \[ \boxed{5}. \] Hence option (B) is correct.