Practice The Fetch-Decode-Execute Cycle - 1.1.5 | Module 1: Introduction to Computer Systems and Performance | Computer Architecture
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1.1.5 - The Fetch-Decode-Execute Cycle

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the first step in the Fetch-Decode-Execute cycle?

💡 Hint: Consider what the CPU does at the start of the cycle.

Question 2

Easy

What does the ALU do during the Execute phase?

💡 Hint: Think about arithmetic operations in a calculator.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the primary role of the Program Counter?

  • To hold the fetched instruction
  • To track the address of the next instruction
  • To execute arithmetic operations

💡 Hint: Think about what the CPU needs to do next.

Question 2

True or False: The Decode phase is where the CPU executes instructions.

  • True
  • False

💡 Hint: Consider the distinction between understanding and action.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Consider a CPU that operates with a 3-clock cycle Instruction Fetch, a 2-clock cycle Decode, and a 5-clock cycle Execute. If the system has to complete 10 instructions, what is the total time taken assuming continuous operation?

💡 Hint: Break down time taken per instruction into its phases.

Question 2

Suppose an instruction fetched has a complex Decode sequence that includes a lookup operation taking longer than usual during execution. How could this affect the Fetch-Decode-Execute cycle's overall timing?

💡 Hint: Think about how delays can propagate in a sequence.

Challenge and get performance evaluation