Deadlock MCQ Questions and Answers for Practice

1. Invoking periodically to test for deadlock is one of the way for deadlock ................

1. Avoidance
2. Detection
3. Deletion
4. Prevention

2. For effective operating system, when to check for deadlock?

1. at fixed time intervals
2. both (a) and (b)
3. none of the mentioned
4. every time a resource request is made

3. With deadlock detection, requested resources are granted to

1. Programs
2. Processes
3. Users
4. Resources

4. A problem encountered in multitasking when a process is perpetually denied necessary resources is called

1. starvation
2. inversion
3. aging
4. deadlock

5. A direct method of deadlock prevention is to prevent the occurrence of a ......................

1. Hold and Wait
2. Preemption
3. Circular Wait
4. $Mutual Exclusion

6. Which one of the following is a visual ( mathematical ) way to determine the deadlock occurrence

1. starvation graph
2. inversion graph
3. none of the mentioned
4. resource allocation graph

7. Deadlock prevention strategies are very

1. Straight
2. Complex
3. Simple
4. Conservative

8. To avoid deadlock

1. resource allocation must be done only once
2. all deadlocked processes must be aborted
3. inversion technique can be used
4. there must be a fixed number of resources to allocate

9. Deadlock avoidance requires knowledge of future

1. Resource
2. Program
3. Application
4. Process

10. With ............. a decision is made dynamically whether the current resource allocation request will, if granted potentially lead to deadlock.

1. deadlock avoidance
2. deadlock detection
3. deadlock deletion
4. deadlock prevention

11. The number of resources requested by a process

1. must always be equal to the total number of resources available in the system
2. must not exceed the total number of resources available in the system
3. must exceed the total number of resources available in the system
4. must always be less than the total number of resources available in the system

12. An unsafe state is of course a state that is not

1. Safe
2. Run
3. Control
4. Require

13. Deadlock prevention is a set of methods

1. to ensure that all of the necessary conditions do not hold
2. to decide if the requested resources for a process have to be given or not
3. to recover from a deadlock
4. to ensure that at least one of the necessary conditions cannot hold

14. In order to ............. the deadlock do not grant an incremental resource request to a process if this allocation might lead to deadlock

1. Avoid
2. Detect
3. Delete
4. Prevent