Explore topic-wise MCQs in Operating System Questions & Answers I/O Subsystem.

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

1.

The device-status table contains ____________

A. each I/O device type
B. each I/O device address
C. each I/O device state
D. all of the mentioned
Answer» E.
Discussion
2.

Device drivers are implemented to interface ____________

A. character devices
B. block devices
C. network devices
D. all of the mentioned
Answer» E.
Discussion
3.

When hardware is accessed by reading and writing to the specific memory locations, then it is called ____________

A. port-mapped I/O
B. controller-mapped I/O
C. bus-mapped I/O
D. none of the mentioned
Answer» E.
Discussion
4.

The data-in register of I/O port is ____________

A. Read by host to get input
B. Read by controller to get input
C. Written by host to send output
D. Written by host to start a command
Answer» B. Read by controller to get input
Discussion
5.

I/O hardware contains ____________

A. Bus
B. Controller
C. I/O port and its registers
D. All of the mentioned
Answer» E.
Discussion