CS 241: Operating System - Threads & Concurrency
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Questions and Answers

What is the advantage of a server creating a new thread to service a request compared to creating a new process?

  • It allows the server to service multiple requests concurrently
  • It improves the security of the server by isolating requests
  • It reduces the memory usage of the server
  • It is cheaper than process creation and has lower overhead (correct)

    • What is the primary benefit of multithreading in interactive applications?

  • Better resource utilization
  • Faster execution of tasks
  • Improved responsiveness (correct)
  • Enhanced security features

    • How do processes share resources?

  • Through shared memory and message passing (correct)
  • By default, without explicit arrangement by the programmer
  • Through inter-process communication
  • Using threads

    • What is a benefit of multithreading for an application?

    <p>It allows the application to share code and data</p> Signup and view all the answers

    What is a challenge of multicore programming?

    <p>Dividing activities among multiple cores</p> Signup and view all the answers

    What is the primary advantage of concurrency in a system?

    <p>It allows the system to perform multiple tasks simultaneously</p> Signup and view all the answers

    What is the primary reason why process creation is not suitable for a busy web server?

    <p>It is not efficient in terms of resource usage</p> Signup and view all the answers

    What is the main advantage of using multiple threads in a web server?

    <p>It enables the server to service multiple clients concurrently</p> Signup and view all the answers

    What is the primary motivation for using multithreading in modern applications?

    <p>To implement multiple tasks within an application</p> Signup and view all the answers

    What is the main difference between process creation and thread creation?

    <p>Process creation is heavy-weight, while thread creation is light-weight</p> Signup and view all the answers

    What is the main advantage of using a multithreaded server architecture?

    <p>It enables the server to service multiple clients concurrently</p> Signup and view all the answers

    Why is it generally more efficient to use one process that contains multiple threads?

    <p>Because the new process will perform the same tasks as the existing process</p> Signup and view all the answers

    What is the primary difference between data parallelism and task parallelism?

    <p>Data parallelism distributes data across multiple cores, whereas task parallelism distributes tasks across multiple cores.</p> Signup and view all the answers

    What does Amdahl's Law measure?

    <p>The potential performance gain from adding additional computing cores to an application with both serial and parallel components.</p> Signup and view all the answers

    What is the significance of the variable S in Amdahl's Law?

    <p>It represents the portion of the application that must be performed serially.</p> Signup and view all the answers

    What would be the result of running an application with 75% parallel and 25% serial components on a system with two processing cores?

    <p>The application would achieve a speedup of 1.25.</p> Signup and view all the answers

    What is the primary advantage of using multiple cores in a system?

    <p>It enables parallel execution of applications, leading to increased performance.</p> Signup and view all the answers

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