Operating System Threads Quiz
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Questions and Answers

What is a thread in the context of an operating system?

  • A separate memory space for a process
  • A sequence flow of task execution within a process (correct)
  • A lightweight version of a process
  • An independent process within a program

    • How does multithreading contribute to CPU utilization?

  • It enables parallelism and improves CPU utilization (correct)
  • It reduces CPU utilization by creating additional processes
  • It creates independent processes for each task, reducing CPU load
  • It has no impact on CPU utilization

    • What is the relationship between threads and processes?

  • Threads are independent of processes
  • Each thread has its own process
  • Processes cannot contain threads
  • A process contains multiple threads (correct)

    • How do threads in an operating system share resources?

    <p>They share the same memory and resources as the program that created them</p> Signup and view all the answers

    What is necessary for effective multithreading in an operating system?

    <p>Multiple CPUs or cores</p> Signup and view all the answers

    What is the primary function of the long-term scheduler in process scheduling?

    <p>Bringing new processes to the 'Ready State' and controlling the degree of multi-programming</p> Signup and view all the answers

    In which type of scheduling does the OS assign resources to a process for a predetermined period of time?

    <p>Pre-emptive scheduling</p> Signup and view all the answers

    What is the main characteristic of non-preemptive scheduling?

    <p>A process's resource cannot be taken before the process has finished running</p> Signup and view all the answers

    What is the essential feature of pre-emptive scheduling?

    <p>The OS can switch a currently active process for a higher priority process</p> Signup and view all the answers

    What is an important function of the short-term scheduler in process scheduling?

    <p>Deciding which ready process should be executed next and allocating CPU time</p> Signup and view all the answers

    Study Notes

    Threads and Processes

    • A thread is a single sequence of execution within a process, sharing resources with other threads in the process.
    • Multithreading contributes to CPU utilization by enabling multiple threads to run concurrently, improving system performance and responsiveness.

    Thread Resource Sharing

    • Threads in an operating system share resources efficiently, reducing memory usage and improving performance.

    Effectiveness of Multithreading

    • Effective multithreading in an operating system requires synchronization mechanisms, efficient context switching, and proper allocation of resources.

    Process Scheduling

    Long-term Scheduler

    • The primary function of the long-term scheduler is to select processes from the job pool and load them into memory for execution.

    Scheduling Types

    • Time-sharing scheduling is a type where the OS assigns resources to a process for a predetermined period of time, called a time slice or time quantum.

    Non-preemptive Scheduling

    • The main characteristic of non-preemptive scheduling is that once a process is allocated the CPU, it remains in control until it relinquishes it voluntarily.

    Pre-emptive Scheduling

    • The essential feature of pre-emptive scheduling is that the OS can interrupt and allocate the CPU to another process, reducing response time and improving system responsiveness.

    Short-term Scheduler

    • An important function of the short-term scheduler is to select the next process to execute from the ready queue, ensuring efficient use of system resources.

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    Description

    Test your knowledge about threads in operating systems with this quiz. Learn about the concept of threads, their role in achieving parallelism, and their relationship with processes.

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