Explore topic-wise MCQs in Operating System.

This section includes 4 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.

IN_POLLING_:?$

A. busy – wait cycles wait for I/O from device
B. interrupt handler receives interrupts
C. interrupt-request line is triggered by I/O device
D. all of the mentioned
Answer» B. interrupt handler receives interrupts
Discussion
2.

An asynchronous call :$

A. returns immediately, without waiting for the I/O to complete
B. does not return immediately and waits for the I/O to complete
C. consumes a lot of time
D. is too slow
Answer» B. does not return immediately and waits for the I/O to complete
Discussion
3.

A non blocking system call _________________$

A. halts the execution of the application for an extended time
B. does not halt the execution of the application
C. does not block the interrupts
D. none of the mentioned
Answer» C. does not block the interrupts
Discussion
4.

A keyboard is an example of a device that is accessed through a __________ interface?

A. block stream
B. set of blocks
C. character stream
D. none of the mentioned
Answer» D. none of the mentioned
Discussion