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MCQ

Logical extension of computation migration is ___________

process migration

system migration

thread migration

data migration

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MCQ

In distributed systems, election algorithms assumes that ____________

a unique priority number is associated with each active process in system

there is no priority number associated with any process

priority of the processes is not required

none of the mentioned

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MCQ

What are the advantages of token(with rings) passing approach? i) One processor as coordinator which handles all requests ii) No starvation if the ring is unidirectional iii) There are many messages passed per section entered if few users want to get in section iv) One processor as coordinator which handles all requests v) Only one message/entry if everyone wants to get in

ii and iii

i, ii and iii

i, ii and iv

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MCQ

What is the coherency of replicated data?

All replicas are identical at all times

Replicas are perceived as identical only at some points in time

Users always read the most recent data in the replicas

All of the mentioned

Discussion

MCQ

What are characteristic of NFS protocol?

Search for file within directory

Read a set of directory entries

Manipulate links and directories

All of the mentioned

Discussion

MCQ

Which of the following disadvantages follows the single coordinator approach?

Bottleneck

Slow response

Deadlock

One request per second

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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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