Practice Setting Reference Bits to 0 - 19.1.2 | 19. Approximate LRU Implementation | Computer Organisation and Architecture - Vol 3
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19.1.2 - Setting Reference Bits to 0

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What happens to a reference bit when a page is accessed?

💡 Hint: Think about tracking access frequency.

Question 2

Easy

Why do we reset reference bits at the beginning of a new interval?

💡 Hint: Consider how this aids in replacement decisions.

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 happens to the reference bit when a page is accessed?

  • It is set to 0
  • It is set to 1
  • It is deleted

💡 Hint: Think about what we need to track when a page is used.

Question 2

True or False: A dirty page can be replaced without writing it to disk first.

  • True
  • False

💡 Hint: Remember the consequences of modifying a page.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Consider a system with 5 pages and a time interval where each page gets accessed. If the pages are subsequently accessed in this order: A, B, C, D, A, B, C, D, E, determine how many pages will be replaced and in what order according to both FIFO and the second-chance algorithm.

💡 Hint: Map out the access pattern and evaluate the queues created by each algorithm.

Question 2

If a dirty page is replaced, what are the conditions and penalties involved? Illustrate with an example.

💡 Hint: Consider the workload on memory management based on page state.

Challenge and get performance evaluation