Virtual Memory Review Questions: Section 8.1 and 8.2
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Questions and Answers

In a pure demand paged system, when is a page brought into memory?

  • When needed (correct)
  • Before it is needed
  • Randomly
  • After a page fault occurs

    • Which system call initiates copy on write?

  • exec()
  • wait()
  • vfork() (correct)
  • fork()

    • What is the simplest page replacement algorithm?

  • OPT
  • FIFO (correct)
  • Second Chance
  • LRU

    • Which page replacement algorithm operates by replacing the page that will not be used for the longest period of time?

    <p>OPT</p> Signup and view all the answers

    What term describes the set of pages a process is currently referencing?

    <p>Working Set</p> Signup and view all the answers

    Approximation algorithms are commonly used in implementing which page replacement policy?

    <p><strong>LRU</strong></p> Signup and view all the answers

    Shared memory is typically implemented using which technique?

    <p><strong>Memory Mapping</strong></p> Signup and view all the answers

    What term is used to describe when a process spends more time paging than executing?

    <p>Thrashing</p> Signup and view all the answers

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