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MCQ

Buffering is done to ____________

cope with device speed mismatch

cope with device transfer size mismatch

maintain copy semantics

all of the mentioned

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MCQ

In a programmed input/output(PIO) __________

the CPU uses polling to watch the control bit constantly, looping to see if a device is ready

the CPU writes one data byte to the data register and sets a bit in control register to show that a byte is available

the CPU receives an interrupt when the device is ready for the next byte

the CPU runs a user written code and does accordingly

Discussion

MCQ

The ________ can be turned off by the CPU before the execution of critical instruction sequences that must not be interrupted.

nonmaskable interrupt

blocked interrupt

maskable interrupt

none of the mentioned

Discussion

MCQ

In an interrupt driven input/output __________

the CPU uses polling to watch the control bit constantly, looping to see if a device is ready

the CPU writes one data byte to the data register and sets a bit in control register to show that a byte is available

the CPU receives an interrupt when the device is ready for the next byte

the CPU runs a user written code and does accordingly

Discussion

MCQ

How does the software trigger an interrupt?

Sending signals to CPU through bus

Executing a special operation called system call

Executing a special program called system program

Executing a special program called interrupt trigger program

Discussion

MCQ

The __________ is used by device controllers to request service.

nonmaskable interrupt

blocked interrupt

maskable interrupt

none of the mentioned

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Introduction to Operating System

Types

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Structures

Processes

Threads

CPU Scheduling

Process Synchronization

Memory Management

Storage Management

Input Output Systems

Networking

Distributed Operating System

Protection and Security

Unix

Linux

MS Windows

Mixed

Operating Systems Overview

Process Management

Finding and Processing Files

File Management

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