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MCQ

The state of the data accessed by an aborted transaction must be restored to what it was just before the transaction started executing. This restoration is known as ________ of transaction.

safety

protection

roll-back

revert-back

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MCQ

Concurrent access to shared data may result in ____________

data consistency

data insecurity

data inconsistency

none of the mentioned

Discussion

MCQ

A procedure defined within a ________ can access only those variables declared locally within the _______ and its formal parameters.

process, semaphore

process, monitor

semaphore, semaphore

monitor, monitor

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

The dining-philosophers problem will occur in case of ____________

5 philosophers and 5 chopsticks

4 philosophers and 5 chopsticks

3 philosophers and 5 chopsticks

6 philosophers and 5 chopsticks

Discussion

MCQ

For an effective operating system, when to check for deadlock?

every time a resource request is made

at fixed time intervals

every time a resource request is made at fixed time intervals

none of the mentioned

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Introduction to Operating System

Types

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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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