Lesson 1
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Questions and Answers

What are the three main purposes of an operating system?

  • Software installation, user authentication, and file encryption.
  • Resource allocation, control program functions, and user program execution. (correct)
  • Data storage, user interface design, and network management.
  • Program execution, error handling, and hardware interaction.

    • When is it appropriate for the operating system to forsake efficient use of computing hardware?

  • In single-user systems to optimize user interaction. (correct)
  • When the system is idle.
  • In multi-user systems for fairness.
  • Never, as it always leads to inefficiencies.

    • What is the main difficulty in writing an operating system for a real-time environment?

  • Balancing system load efficiently.
  • Managing user permissions.
  • Keeping the operating system within fixed time constraints. (correct)
  • Ensuring compatibility with various hardware.

    • How does the distinction between kernel mode and user mode function as a form of protection?

    <p>By limiting the capability of the CPU in user mode.</p> Signup and view all the answers

    What is the primary function of the command interpreter in an operating system?

    <p>Interpreting and executing user commands</p> Signup and view all the answers

    In the context of an operating system, what is 'thrashing'?

    <p>A high rate of page swapping, leading to reduced performance</p> Signup and view all the answers

    What does a microkernel approach in operating systems emphasize?

    <p>Minimalist kernel functionality, with additional services running in user space</p> Signup and view all the answers

    Which of the following is a characteristic of distributed operating systems?

    <p>Resources are shared among multiple computers</p> Signup and view all the answers

    What is the main advantage of multiprogramming?

    <p>Improved system efficiency by maximizing CPU usage</p> Signup and view all the answers

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