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OSG202 Haianh 4 Questions And Answers With Latest Solutions

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OSG202 Haianh 4 Questions And Answers With Latest Solutions Which method is used to prevent the communication deadlock? * 1/1 Timeouts Acknowledge signal Handling alarm All of the other choices ANS d For matrix-based algorithm to detect deadlock, number of instances of resource currently ...

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  • November 6, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • osg202 haianh 4
  • OSG202
  • OSG202
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OSG202 Haianh 4 Questions And Answers With
Latest Solutions
Which method is used to prevent the communication deadlock? *
1/1
Timeouts
Acknowledge signal
Handling alarm

All of the other choices ANS d


For matrix-based algorithm to detect deadlock, number of instances of resource currently unassigned
is given by: *
1/1
Available resource vector
Request matrix
Current allocation matrix

Existing resource vector ANS a


In a directed graph used to model deadlock, ____ represents deadlock. *
1/1
Cycle
Dashed arrow
Solid arrow

Any path ANS a


What is the correct approach with the No preemption condition to prevent Deadlock? *
1/1
Order resources numerically
Spool everything

,Request all resources initially

Take resources away ANS d


A possibility of deadlock can occur: *
1/1
If a system is in safe state
If a system is in unsafe state
If a system is in instable state

None of the other choices ANS b


____ is when, in modern printing systems, a disk accepts output from several users and acts as a
temporary storage area for all output until the printer is ready to accept it *
1/1
Spooling
Buffering
Lagging

Spoofing ANS a


The first and simplest recovery method, and the most drastic, is to ____. *
1/1
Select a nondeadlocked job, preempt the resources it's holding, and allocate them to a Deadlocked
process so it can resume execution, thus breaking the deadlock
Terminate every job that's active in the system and restart them from the beginning
Identify which jobs are involved in the deadlock and terminate them one at a time, checking to see if
the deadlock is eliminated after each removal

Terminate only the jobs involved in the deadlock and ask their users to resubmit them ANS b


Which of the following statements does not apply to manual deadlock management? *
1/1
Recovery may involves rebooting the system

, Deadlock is relatively infrequent for some system resources
OS designers are normally very sensitive to deadlock when designing resource managers

None of the other choices ANS c


One of way to prevent a deadlock is ________ *
1/1
Locks one of the processes
Spool everything
Kills one of the processes

Rollback ANS b


____ occurs when two processes do not release control of resources they are using. *
1/1
Hold and wait condition
Circular-wait condition
Mutual-exclusion condition

No preemption condition ANS a


A simplest way to break a deadlock is to *
1/1
Locks one of the processes
Kills one of the processes
Rollback

Preempt a resource ANS b


____ is the act of allowing only one process to have access to a dedicated resource. *
1/1
No preemption condition
Mutual-exclusion condition

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