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MCQ

Which one of the following is the deadlock avoidance algorithm?

banker's algorithm

round-robin algorithm

elevator algorithm

karn's algorithm

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MCQ

An edge from process Pi to Pj in a wait for graph indicates that ____________

Pi is waiting for Pj to release a resource that Pi needs

Pj is waiting for Pi to release a resource that Pj needs

Pi is waiting for Pj to leave the system

Pj is waiting for Pi to leave the system

Discussion

MCQ

The request and release of resources are ___________

command line statements

interrupts

system calls

special programs

Discussion

MCQ

One way to ensure that the circular wait condition never holds is to ____________

impose a total ordering of all resource types and to determine whether one precedes another in the ordering

to never let a process acquire resources that are held by other processes

to let a process wait for only one resource at a time

all of the mentioned

Discussion

MCQ

Consider a transaction T1 that committed prior to checkpoint. The record appears in the log before the record. Any modifications made by T1 must have been written to the stable storage either with the checkpoint or prior to it. Thus at recovery time ____________

There is a need to perform an undo operation on T1

There is a need to perform a redo operation on T1

There is no need to perform an undo and redo operation on T1

All of the mentioned

Discussion

MCQ

A semaphore is a shared integer variable __________

that can not drop below zero

that can not be more than zero

that can not drop below one

that can not be more than one

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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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