Practice Understanding Page Faults - 14.1.1 | 14. Page Faults | Computer Organisation and Architecture - Vol 3
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14.1.1 - Understanding Page Faults

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is a page fault?

💡 Hint: Think about what happens when accessing data not currently loaded.

Question 2

Easy

What does a valid bit in a page table entry indicate?

💡 Hint: Recall what the bit shows regarding a page's presence.

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 occurs during a page fault?

  • The program continues without interruption
  • The OS handles an error
  • A page is brought from secondary storage

💡 Hint: Think about what happens when requested data isn’t found in memory.

Question 2

A valid bit set to 0 in the page table indicates what?

  • True
  • False

💡 Hint: Remember how the valid bit functions in the context of pages.

Solve 3 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Consider a computing system where the average time to access memory is 100 ns, but a page fault takes 10 ms. If 10% of the accesses result in page faults, calculate the effective access time.

💡 Hint: Use the formula to figure out how often page faults occur.

Question 2

A program runs where 1 in every 25 instructions leads to a page fault. If processing an instruction normally takes 50 cycles, and servicing a page fault takes 500 cycles, calculate the average time per instruction (in cycles).

💡 Hint: Focus on the ratio of successful accesses versus page fault handling.

Challenge and get performance evaluation