Engineering Questions with Answers - Multiple Choice Questions
Operating System MCQ – Deadlock Recovery
1 - Question
A deadlock can be broken by ____________
a) abort one or more processes to break the circular wait
b) abort all the process in the system
c) preempt all resources from all processes
d) none of the mentioned
View Answer
Answer: a
Explanation: None.
2 - Question
The two ways of aborting processes and eliminating deadlocks are ____________
a) Abort all deadlocked processes
b) Abort all processes
c) Abort one process at a time until the deadlock cycle is eliminated
d) All of the mentioned
View Answer
Answer: c
Explanation: None.
3 - Question
Those processes should be aborted on occurrence of a deadlock, the termination of which?
a) is more time consuming
b) incurs minimum cost
c) safety is not hampered
d) all of the mentioned
View Answer
Answer: b
Explanation: None.
4 - Question
The process to be aborted is chosen on the basis of the following factors?
a) priority of the process
b) process is interactive or batch
c) how long the process has computed
d) all of the mentioned
View Answer
Answer: d
Explanation: None.
5 - Question
Cost factors for process termination include ____________
a) Number of resources the deadlock process is not holding
b) CPU utilization at the time of deadlock
c) Amount of time a deadlocked process has thus far consumed during its execution
d) All of the mentioned
View Answer
Answer: c
Explanation: None.
6 - Question
If we preempt a resource from a process, the process cannot continue with its normal execution and it must be ____________
a) aborted
b) rolled back
c) terminated
d) queued
View Answer
Answer: b
Explanation: None.
7 - Question
To _______ to a safe state, the system needs to keep more information about the states of processes.
a) abort the process
b) roll back the process
c) queue the process
d) none of the mentioned
View Answer
Answer: b
Explanation: None.
8 - Question
If the resources are always preempted from the same process __________ can occur.
a) deadlock
b) system crash
c) aging
d) starvation
View Answer
Answer: d
Explanation: None.
9 - Question
What is the solution to starvation?
a) the number of rollbacks must be included in the cost factor
b) the number of resources must be included in resource preemption
c) resource preemption be done instead
d) all of the mentioned
View Answer
Answer: a
Explanation: None.