Processor Management in Operating Systems
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Questions and Answers

What is the purpose of buffering in the Kernel I/O Subsystem?

  • To prioritize I/O requests based on their frequency of access
  • To allocate memory for holding copies of frequently accessed data
  • To store data while they are transferred between devices or between a device and an application (correct)
  • To manage system errors and application faults

    • Which memory area does the Kernel I/O Subsystem use to hold copies of data for efficient access?

  • Queue
  • Buffer
  • Cache (correct)
  • Spool

    • What is the function of a spool in the context of I/O systems?

  • To manage buffer space for incoming data streams
  • To handle system errors and application faults
  • To allocate memory for frequently accessed data in a cache
  • To store output data for devices like printers that cannot accept interleaved data streams (correct)

    • How does an operating system with protected memory handle errors?

    <p>By guarding against many kinds of hardware and application errors</p> Signup and view all the answers

    What defines a file in the context of an operating system?

    <p>A named collection of related information recorded on secondary storage</p> Signup and view all the answers

    How does caching improve data access in the Kernel I/O Subsystem?

    <p>By holding copies of data in a region of fast memory for efficient access</p> Signup and view all the answers

    What is the main purpose of interactivity in an operating system?

    <p>To provide the user an interface to interact with the system</p> Signup and view all the answers

    In a real-time system, what does the operating system need to guarantee?

    <p>Guarantee response to events within fixed periods of time</p> Signup and view all the answers

    What is a key disadvantage of using multiprogramming operating systems?

    <p>CPU scheduling is required</p> Signup and view all the answers

    What is the role of memory management programs in the context of operating systems?

    <p>Accommodating many jobs in memory</p> Signup and view all the answers

    What is a characteristic of the Most Frequently Used (MFU) algorithm?

    <p>Favors pages that have been heavily used in the past</p> Signup and view all the answers

    What is a drawback of the Least Frequently Used (LFU) algorithm in page replacement?

    <p>May lead to unnecessary page replacements for infrequently used pages</p> Signup and view all the answers

    Which of the following is the primary responsibility of the I/O controller in an operating system?

    <p>Keeping track of all devices and managing device communication</p> Signup and view all the answers

    The Most Frequently Used (MFU) algorithm is a type of:

    <p>Page replacement algorithm</p> Signup and view all the answers

    Which of the following is true about the Least Frequently Used (LFU) algorithm?

    <p>It is a page replacement algorithm that replaces the page that has been used least frequently</p> Signup and view all the answers

    The Page Buffering algorithm is related to which of the following areas of operating system management?

    <p>Memory management</p> Signup and view all the answers

    Which of the following is an example of a page replacement algorithm?

    <p>Least Recently Used (LRU)</p> Signup and view all the answers

    Which of the following is responsible for allocating and de-allocating devices in an efficient way?

    <p>The I/O controller</p> Signup and view all the answers

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