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3 cards from this section. Quick, good the night before a test.
What is the purpose of a page replacement algorithm?
Think about memory management tasks in an operating system.
Define the 'reference bit.'
Consider what it tells us about page usage.
What algorithm gives pages a second chance based on their reference bits?
Focus on algorithms that utilize a 'clock' or circular approach.
True or False: The dirty bit indicates whether a page has been accessed recently.
Think about what the purpose of the dirty bit is in memory management.
Design a detailed flowchart that illustrates how the Modified Clock Algorithm determines which page to replace in case of a page fault.
Start with the initial state and progress through check points for each reference bit.
Evaluate a specific instance where an operating system applied the Modified Clock Algorithm and measured performance improvements. Report on the results.
Consider aspects such as system running speed and efficiency.
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