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3 cards from this section. Quick, good the night before a test.
What happens during a page fault?
Think about what the system does when a needed page is missing.
Define FIFO in the context of page replacement.
Which page do you think leaves memory first?
What does FIFO stand for in page replacement?
What phrase describes something that is processed in order?
True or False: LRU can experience Belady's anomaly.
Consider whether LRU tracks page usage differently from FIFO.
Imagine a system with 3 page frames. Given the request sequence A, B, C, D, A, B, C, D, E and F, determine how many page faults occur with FIFO and LRU strategies.
Draw out the pages currently in memory after each request to track faults.
Discuss the trade-offs of using an LRU algorithm in a system with high memory usage.
Consider the balance between performance benefits and system resource use.
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