Operating Systems Quiz 2

In a system with user-level threads, if one thread in a process is blocked, what happens to the other threads in the same process?

• A. All threads in the process are blocked.

• B. Other threads continue executing independently.

• C. The process is terminated.

• D. A system interrupt is triggered.

What is a thread in the context of multitasking?

• A. A process in execution

• B. A lightweight process sharing the same address space

• C. A file in use by the operating system

• D. A system utility for file management

In synchronization, what does the term "race condition" refer to?

• A. A competition between processes

• B. A condition of deadlock

• C. Undesirable interference between concurrent operations

• D. A priority inversion scenario

Which scheduling algorithm aims to minimize the turnaround time?

• A. First-Come-First-Serve (FCFS)

• B. Shortest Job Next (SJN)

• C. Round Robin (RR)

• D. Priority Scheduling

In Round Robin CPU scheduling, what does the term "time quantum" refer to?

• A. The total time required to complete a process.

• B. The amount of time a process is allowed to run in one continuous time slot.

• C. The time taken by the CPU to switch between processes.

• D. The priority assigned to each process in the ready queue.

What is the primary goal of synchronization in operating systems?

• A. Minimizing memory usage

• B. Ensuring fair CPU scheduling

• C. Coordinating the execution of multiple processes

• D. Enhancing disk I/O performance

Which of the following is a characteristic of user-level threads (ULTs)?

• A. Better responsiveness to system events.

• B. Lower context-switching overhead.

• C. Directly visible to the operating system scheduler.

• D. Kernel support is required for their management.

What is the critical section problem in concurrent programming?

• A. Ensuring all processes run concurrently

• B. Managing access to shared resources

• C. Coordinating process termination

• D. Balancing system load

What is a deadlock in the context of operating systems?

• A. Simultaneous execution of multiple processes

• B. Inability to acquire necessary resources and proceed

• C. Efficient scheduling of processes

• D. Fair distribution of CPU time

Which of the following statements accurately distinguishes between user-level threads (ULTs) and kernel-level threads (KLTs)?

• A. User-level threads are managed by the operating system kernel, while kernel-level threads are managed by user-level libraries.

• B. User-level threads are more efficient in terms of context switching compared to kernel-level threads.

• C. Kernel-level threads are visible to the operating system scheduler, allowing for better utilization of multiple processors.

• D. User-level threads provide stronger isolation between threads, preventing interference with each other.