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Operating System MCQ Question with Answer

Operating System MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 15
In case of ____________________transparency a file can transparently move to another server.

Location
Migration
Replication
Concurrency

Question No : 16
_________, as a feature of good distributed file system, clients should be able to continue working if a file server crashes. Likewise, data must not be lost and a restarted file server must be able to recover to a valid state.

Scalability
Reliability
Flexibility
Fault tolerance

Question No : 17
DSM stands for______________

Direct shared memory
Direct system memory
Distributed shared memory
Distributed system memory

Question No : 18
Having data belonging to two independent processes in the same page is called____________.

Buffering
Blocking
Message-passing
False sharing

Question No : 19
_______refers to the block size of the DSM system, i.e. to the units of sharing and the unit of data transfer across the network when a network block fault occurs.

Granularity
Coherence
Abstraction
Synchronization

Question No : 20
Most accurate global time is based on oscillations of the ______________

Cesium-130 atom
Cesium-133 atom
Cesium-136 atom
Cesium-139 atom

Question No : 21
The Network Time Protocol is similar to _______________algorithm in that synchronization is also performed using time servers and an attempt is made to correct for communication latencies.

Banker's
Divide and conquer's
Cristians
Xdelta's

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