Which of the following condition is required for a deadlock to be possible?Group of answer choicesa process may hold allocated resources while awaiting assignment of other resourcesno resource can be forcibly removed from a process holding itmutual exclusionall of these
Question
Which of the following condition is required for a deadlock to be possible?Group of answer choicesa process may hold allocated resources while awaiting assignment of other resourcesno resource can be forcibly removed from a process holding itmutual exclusionall of these
Solution
All of these conditions are required for a deadlock to be possible.
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A process may hold allocated resources while awaiting assignment of other resources: This means that a process is holding onto resources while waiting for other resources to be assigned to it. This can lead to a deadlock if those other resources are currently being held by another process that is also waiting for resources the first process holds.
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No resource can be forcibly removed from a process holding it: If a resource could be forcibly removed from a process, then the system could potentially avoid deadlock by taking resources away from a process and giving them to another. But if this is not possible, then deadlock can occur.
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Mutual exclusion: This means that at least one resource must be held in a non-shareable mode. That is, only one process at a time can use the resource. If another process requests that resource, the requesting process must be delayed until the resource has been released.
So, the correct answer is "all of these".
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Which of the following condition is required for a deadlock to be possible?a.Mutual exclusionb.All of the mentionedc.No resource can be forcibly removed from a process holding itd.A process may hold allocated resources while awaiting assignment of other resources
Please select all the condition(s) of policy must be present for a deadlock to be possible:Group of answer choicesMutual exclusion. Only one process may use a resource at a time.Hold and wait. A process may hold allocated resources while awaiting assignment of other resources.None of the mentionedNo preemption. No resource can be forcibly removed from a process holding it.Circular wait. A closed chain of processes exists, such that each process holds at least one resource needed by the next process in the chain.
A system is in the safe state ifGroup of answer choicesthere exists safe resourceall of thesethere exists safe sequencethe system can allocate resources to each process in some order and still avoid a deadlock
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