Command Control Systems: Operating System Unit 2
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Questions and Answers

What is the main objective of the course mentioned in the text?

  • To study environmental sustainability in computing
  • To analyze the impact of computer systems on society
  • To understand the architecture of an operating system (correct)
  • To learn about project management in computer engineering

    • Which course outcome focuses on implementing process management policies and CPU scheduling?

  • CO2 (correct)
  • CO3
  • CO1
  • CO4

    • What does CO4 in the course outcomes refer to?

  • Evaluating memory management and its allocation policies (correct)
  • Understanding and analyzing I/O management
  • Implementing file system management
  • Applying deadlock handling algorithms

    • Which program outcome emphasizes understanding the engineer's role in society?

    <p>The engineer and society (A)</p> Signup and view all the answers

    Which program outcome relates to the ethical aspects of engineering?

    <p>Ethics (C)</p> Signup and view all the answers

    Which aspect is NOT a part of the course outcomes based on the text provided?

    <p>Environmental sustainability (B)</p> Signup and view all the answers

    What is the primary objective of Shortest-Job-First (SJF) Scheduling?

    <p>Assigning CPU to the process with the smallest burst time (C)</p> Signup and view all the answers

    What is the role of FCFS scheduling in SJF when two processes have the same next CPU burst length?

    <p>It breaks the tie and assigns CPU based on arrival time (A)</p> Signup and view all the answers

    What distinguishes between Non-preemptive and Preemptive SJF schemes?

    <p>Whether a process can be interrupted before completing its CPU burst (D)</p> Signup and view all the answers

    Why is Shortest Remaining Time First (SRTF) considered optimal?

    <p>It guarantees minimum average waiting time (B)</p> Signup and view all the answers

    How does SJF Scheduling handle ties between processes with equal burst times?

    <p>It uses FCFS Scheduling to break the tie (A)</p> Signup and view all the answers

    What is the main advantage highlighted for Shortest Remaining Time First (SRTF) Scheduling?

    <p>Guarantees minimum average waiting time (A)</p> Signup and view all the answers

    What are the four main sections of a process in memory?

    <p>Stack, heap, text, data (D)</p> Signup and view all the answers

    What is the primary goal of a CPU scheduling algorithm?

    <p>To maximize CPU utilization (B)</p> Signup and view all the answers

    Which of the following is NOT a characteristic used to evaluate scheduling algorithms?

    <p>Fairness (D)</p> Signup and view all the answers

    What is meant by throughput in the context of scheduling?

    <p>The amount of work completed in a unit of time (B)</p> Signup and view all the answers

    What is the difference between turnaround time and response time?

    <p>Response time is the total execution time, turnaround time is submission to completion (B)</p> Signup and view all the answers

    In a multiprogramming system, what does waiting time refer to?

    <p>The time a job waits for resource allocation when resources are contended (B)</p> Signup and view all the answers

    Which of the following models maps many user-level threads to a single kernel thread?

    <p>Many-to-One (C)</p> Signup and view all the answers

    In the One-to-One model, each user-level thread is mapped to:

    <p>A single kernel thread (A)</p> Signup and view all the answers

    Which of the following statements is true about kernel threads?

    <p>They are supported by the kernel (C)</p> Signup and view all the answers

    In the Many-to-Many model, if a user thread is blocked, what happens?

    <p>Other user threads can be scheduled to other kernel threads (B)</p> Signup and view all the answers

    Which of the following operating systems uses the One-to-One model?

    <p>Windows NT/2000 (C)</p> Signup and view all the answers

    Which of the following statements is true about user threads?

    <p>If one user thread blocks, the entire application blocks in the Many-to-One model (B)</p> Signup and view all the answers

    What is the main characteristic of fixed priority scheduling?

    <p>It serves all foreground processes before background processes. (D)</p> Signup and view all the answers

    In a multilevel queue scheduling system, how are processes typically categorized?

    <p>By process types such as system, interactive, batch, and student. (A)</p> Signup and view all the answers

    What is a key characteristic of multilevel feedback queue scheduling?

    <p>Processes can move between queues based on their behavior. (D)</p> Signup and view all the answers

    Which of the following statements about time slices in multilevel queue scheduling is correct?

    <p>Time slices are allocated based on process priority. (B)</p> Signup and view all the answers

    What is the purpose of batch processing in an operating system?

    <p>To collect and process programs and data together. (B)</p> Signup and view all the answers

    In a multilevel queue scheduling system, which process type is typically given the highest priority?

    <p>System processes (C)</p> Signup and view all the answers

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