Deadlock MCQs Quiz Multiple Choice Questions & Answers

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

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

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

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

3. With deadlock detection, requested resources are granted to

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

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

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

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

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

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

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

7. Deadlock prevention strategies are very

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

8. To avoid deadlock

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

9. Deadlock avoidance requires knowledge of future

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

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

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

11. The number of resources requested by a process

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

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

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

13. Deadlock prevention is a set of methods

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

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

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