Explore topic-wise MCQs in Operating System.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Operating System knowledge and support exam preparation. Choose a topic below to get started.

1.

BECAUSE_THE_KERNEL_THREAD_MANAGEMENT_IS_DONE_BY_THE_OPERATING_SYSTEM_ITSELF_:?$

A. kernel threads are faster to create than user threads
B. kernel threads are slower to create than user threads
C. kernel threads are easier to manage as well as create then user threads
D. none of the mentioned
Answer» C. kernel threads are easier to manage as well as create then user threads
Discussion
2.

Which of the following is FALSE ?$

A. Context switch time is longer for kernel level threads than for user level threads
B. User level threads do not need any hardware support
C. Related kernel level threads can be scheduled on different processors in a multiprocessor system
D. Blocking one kernel level thread blocks all other related threads
Answer» E.
Discussion
3.

If a kernel thread performs a blocking system call, ____________$

A. the kernel can schedule another thread in the application for execution
B. the kernel cannot schedule another thread in the same application for execution
C. the kernel must schedule another thread of a different application for execution
D. the kernel must schedule another thread of the same application on a different processor
Answer» B. the kernel cannot schedule another thread in the same application for execution
Discussion
4.

If the kernel is single threaded, then any user level thread performing a blocking system call will ?

A. cause the entire process to run along with the other threads
B. cause the thread to block with the other threads running
C. cause the entire process to block even if the other threads are available to run
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
5.

Multithreading on a multi – CPU machine :$

A. decreases concurrency
B. increases concurrency
C. doesn’t affect the concurrency
D. can increase or decrease the concurrency
Answer» C. doesn‚Äö√Ñ√∂‚àö√ë‚àö¬•t affect the concurrency
Discussion