Practice Dirty Bit (22.1.7) - Summary of Memory Sub-system Organization

Practice: Dirty Bit

Lesson 22.1.7Summary of Memory Sub-system Organization

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8 questions

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6 sample questions

Question 1.
What is the purpose of virtual memory?
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Consider how it interacts with main memory and disk.
Question 2.
What does a dirty bit signify?
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Think about the writing process regarding memory.
3Question 3.
What does the dirty bit in virtual memory represent?
- Determines if a page is free
- Indicates a modified page
- Indicates a page fault
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Think about what happens to data when it changes.
4Question 4.
True or False: Thrashing occurs when there is too much memory allocated to a program.
- True
- False
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Consider the relationship between memory size and usage.
Question 5.
Assume a system uses a page size of 8 KB and has an access time of 100 ns. What happens if a page fault occurs, and the access time to disk is 10 ms? Calculate the total access time for 5 repeated page accesses including one page fault.
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Calculate the time for each memory access and add disk access time when a fault occurs.
Question 6.
Design a small algorithm to minimize thrashing when it occurs in a system. Describe the logic and steps involved.
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No hint provided

4 more questions in this section. Enroll free to practise them all.