Thread Dispatching and CPU Control Quiz
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Questions and Answers

Which action does the OS perform when it dispatches a thread?

  • The OS executes a file I/O request.
  • The OS triggers a software interrupt to regain CPU control.
  • The OS terminates the thread or its parent process normally.
  • The OS loads the instruction pointer with an instruction address that belongs to the dispatched thread. (correct)
  • During the next fetch and execution cycle, what resources does the thread take control of?

  • General-purpose registers only
  • CPU only
  • CPU and its related resources, such as general-purpose registers. (correct)
  • Memory only
  • What events can cause a thread to lose control of the CPU?

  • The OS executes a file I/O request.
  • The thread triggers a software interrupt.
  • The thread or its parent process terminates normally.
  • An interrupt occurs. (correct)
  • How does the OS regain CPU control after a thread terminates?

    <p>The OS triggers a software interrupt.</p> Signup and view all the answers

    What can cause a hardware-generated interrupt?

    <p>An error indication from the hardware</p> Signup and view all the answers

    True or false: When a thread is dispatched, it takes control of a CPU and its related resources, such as general-purpose registers?

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

    True or false: The OS regains CPU control by executing an exit service call, which triggers a software interrupt?

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

    True or false: An interrupt can occur when a process or thread terminates itself?

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

    True or false: The most common method for the OS to regain CPU control is by loading the instruction pointer with an instruction address that belongs to the dispatched thread?

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

    True or false: The act of giving control of a CPU to a ready thread is called interrupting?

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

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