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_THE_LAYERED_APPROACH_OF_OPERATING_SYSTEMS_:?$

A. Bottom Layer(0) is the User interface
B. Highest Layer(N) is the User interface
C. Bottom Layer(N) is the hardware
D. Highest Layer(N) is the hardware
Answer» C. Bottom Layer(N) is the hardware
Discussion
2.

Which operation is performed by an interrupt handler ?$

A. Saving the current state of the system
B. Loading the interrupt handling code and executing it
C. Once done handling, bringing back the system to the original state it was before the interrupt occurred
D. All of the mentioned
Answer» E.
Discussion
3.

How does the Hardware trigger an interrupt ?$

A. Sending signals to CPU through system bus
B. Executing a special program called interrupt program
C. Executing a special program called system program
D. Executing a special operation called system call
Answer» B. Executing a special program called interrupt program
Discussion
4.

In an interrupt driven input/output ?

A. the CPU uses polling to watch the control bit constantly, looping to see if device is ready
B. the CPU writes one data byte to the data register and sets a bit in control register to show that a byte is available
C. the CPU receives an interrupt when the device is ready for the next byte
D. the CPU runs a user written code and does accordingly
Answer» D. the CPU runs a user written code and does accordingly
Discussion