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MCQ

Windows NT uses a __________ implementation for I/O.

message

draft

secondary memory

cache

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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

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MCQ

The _________ determines the cause of the interrupt, performs the necessary processing and executes a return from the interrupt instruction to return the CPU to the execution state prior to the interrupt.

interrupt request line

device driver

interrupt handler

all of the mentioned

Discussion

MCQ

A character stream device transfers ____________

bytes one by one

block of bytes as a unit

with unpredictable response times

none of the mentioned

Discussion

MCQ

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

port-mapped I/O

controller-mapped I/O

bus-mapped I/O

none of the mentioned

Discussion

MCQ

Which hardware triggers some operation after certain programmed count?

programmable interval timer

interrupt timer

programmable timer

none of the mentioned

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category More Operating System Topics

Introduction to Operating System

Types

Services

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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