Question Discussion & Solution

MCQ

Cost factors for process termination include ____________

Number of resources the deadlock process is not holding

CPU utilization at the time of deadlock

Amount of time a deadlocked process has thus far consumed during its execution

All of the mentioned

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What are the two atomic operations permissible on semaphores?

wait

stop

hold

none of the mentioned

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If the resources are always preempted from the same process __________ can occur.

deadlock

system crash

aging

starvation

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MCQ

A system has 12 magnetic tape drives and 3 processes : P0, P1, and P2. Process P0 requires 10 tape drives, P1 requires 4 and P2 requires 9 tape drives.

Process    
P0            
P1                             
P2                             
 
Maximum needs (process-wise: P0 through P2 top to bottom)    
10             
4   
9
 
Currently allocated (process-wise)
5
2
2

Which of the following sequence is a safe sequence?

P0, P1, P2

P1, P2, P0

P2, P0, P1

P1, P0, P2

Discussion

MCQ

Deadlock prevention is a set of methods ____________

to ensure that at least one of the necessary conditions cannot hold

to ensure that all of the necessary conditions do not hold

to decide if the requested resources for a process have to be given or not

to recover from a deadlock

Discussion

MCQ

A minimum of _____ variable(s) is/are required to be shared between processes to solve the critical section problem.

one

two

three

four

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Distributed Operating System

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Linux

MS Windows

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