Practice - Reference Strings
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What does CPI stand for?
💡 Hint: Think about the number of cycles needed for a single instruction.
What is a memory stall cycle?
💡 Hint: Consider delays caused by waiting for data.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is a memory stall cycle?
💡 Hint: Think about what happens when data isn't immediately available.
What is the main objective of a good page replacement algorithm?
💡 Hint: What happens when a memory page is loaded frequently?
1 more question available
Challenge Problems
Push your limits with advanced challenges
Calculate the total CPU time for a program with 100 instructions, with 1.1 CPI, and 20 memory stalls (each costing 50 cycles).
💡 Hint: Use the formula for CPU time.
Given a system with 70% modified pages causing a 20 ms wait and 30% unmodified causing a 10 ms wait, calculate the average time to handle a page fault if 1% of memory accesses cause faults.
💡 Hint: Break the problem into two parts: handling dirty vs. clean pages.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.