Memory Management Quiz 1
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Questions and Answers

What is the primary purpose of memory management?

  • To provide data to the ALU
  • To achieve efficient utilization of memory (correct)
  • To manage secondary storage
  • All of the above
  • Which of the following is a disadvantage of the paged memory allocation scheme?

  • It has some internal fragmentation in the last page
  • It increases overhead in address resolution (correct)
  • It allows dynamic partitioning of memory
  • Job memory allocation is contiguous
  • What type of memory allocation scheme stores a portion of an executing process on disk or secondary memory?

  • Demand paging memory allocation (correct)
  • Fixed partitioning
  • Dynamic partitioning
  • Single-user contiguous
  • Is it true that when a program is initially prepared for loading, its pages are in logical sequence?

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

    Does the FIFO page replacement policy remove pages that are longest in memory?

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

    In the least recently used (LRU) policy, which page in memory gets replaced?

    <p>The page that has not been referenced for the longest time</p> Signup and view all the answers

    In a memory management system using LRU, what Page is most likely to be in Page Frame 1 at Time 8?

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

    If we use LRU, what Page is likely to be in Page Frame 3 at Time 8?

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

    When employing LRU, what is the expected failure rate since Time 1?

    <p>.7</p> Signup and view all the answers

    In an OPT memory management system, which Page is most likely to be in Page Frame 1 at Time 7?

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

    If OPT is used, what Page is expected to be in Page Frame 3 at Time 7?

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

    When applying OPT, what is the likely success rate since Time 1?

    <p>.375</p> Signup and view all the answers

    In the CLOCK page replacement policy, how is the pointer used to step through active pages' reference bits?

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

    What is the page in Page Frame 1 at Time 7 if the Clock page replacement policy is used?

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

    If the LRU (Least Recently Used) policy is applied, what Page is in Page Frame 2 at Time 7?

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

    If FIFO (First-In-First-Out) is implemented, what Page is in Page Frame 3 at Time 8?

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

    Considering the page request order A, B, C, A, D, B, A, B and using FIFO, what Page is in Page Frame 3 at Time 7?

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

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