Question

Fetch - Decode - Execute cycle of CPU is called?

• A. Instruction Cycle
• B. Data Pipelining Cycle
• C. Memory Allocation Cycle
• D. Interrupt Handling Cycle

Hint:

Remember F-D-E: Fetch → Decode → Execute. This sequence is the fundamental Instruction Cycle of every CPU.

Answer 1

The Correct Option is A

Step 1: List the three stages.
The CPU repeatedly performs Fetch, then Decode, then Execute for each instruction.
Step 2: Describe Fetch.
In the fetch stage the CPU pulls the next instruction from memory using the Program Counter.
Step 3: Describe Decode.
In the decode stage the control unit interprets the instruction and works out which operation is needed.
Step 4: Describe Execute.
In the execute stage the ALU or another unit actually carries out the operation.
Step 5: Name the whole loop.
This complete repeating sequence of fetch, decode and execute is collectively called the instruction cycle.
Step 6: Rule out the distractors.
Data pipelining, memory allocation, and interrupt handling describe other ideas, so the correct name is the Instruction Cycle.
\[ \boxed{\text{Instruction Cycle}} \]