Deadlock prevention is a set of methods : a. to ensure that at least one of the necessary conditions cannot hold b. to ensure that all of the necessary conditions do not hold c. to decide if the requested resources for a process have to be given or not d. to recover from a deadlock
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| 73. | Deadlock prevention is a set of methods : |
| a. | to ensure that at least one of the necessary conditions cannot hold |
| b. | to ensure that all of the necessary conditions do not hold |
| c. | to decide if the requested resources for a process have to be given or not |
| d. | to recover from a deadlock |
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- 56. In the multiprogramming system, a set of processes is deadlock if each process in the set is waiting for an event to occur that can be initialized only by another process in the set. Which of the following is not one of the four conditions that are necessary for deadlock to occur? a. nonpreemption b. process suspension c. partial assignment of resources d. circular waitPlease define wait()'s role in process termination if you have a code example.5. A state is safe if the system can allocate resources to each process (up to its maximum) in some order and still avoid deadlock. Then a. deadlocked state is unsafe b. unsafe state may lead to a deadlock situation c. deadlocked state is a subset of unsafe state d. all of these
- COPY FROM CHEGG == DISLIKE AND REPORT Assume that a finite number of resources of a single resource type mustbe managed. Processes may ask for a number of these resources and will returnthem once finished. As an example, many commercial software packagesprovide a given number of licenses, indicating the number of applications thatmay run concurrently. When the application is started, the license count isdecremented. When the application is terminated, the license count isincremented. If all licenses are in use, requests to start the application aredenied. Such a request will be granted only when an existing license holderterminates the application and a license is returned. The following program segment is used to manage a finite number of instancesof an available resource. The maximum number of resources and the number ofavailable resources are declared as follows: #define MAX_RESOURCES 5 int available_resources = MAX_RESOURCES; /** When a process wishes to obtain a number of…59. A system is in the safe state if a. the system can allocate resources to each process in some order and still avoid a deadlock b. there exist a safe sequence c. all of the mentioned d. none of the mentionedSelect all statements below that are true O A set of processes is in a safe state S if S is not a deadlock state and any state T reachable from S is not a deadlock state. In order for a deadlock to occur, only one of the four conditions necessary for deadlocks to occur must be satisfied. O A deadlock means that at least two processes cannot continue working because they are waiting for each to make resources available. о One of the the four conditions necessary for deadlocks to occur is non- preemption. Interrupts, messages, and signals are examples of consumable resources. Reusable resources are produced and consumed dynamically. QL - DELL W
- all of these conditions must be to happen the deadlock state else : process termination circular wait mutual exclusion hold and waitInterrupts are system wide events that stop the execution of a currently running process. Examples of interrupts include (but are not limited to) mouse clicks, process termination, key presses, etc. Some interrupts are considered as more important to be handled first then the others. For example, a hardware interrupt such as hard drive read operation has lesser priority than a memory read. In this way, the most appropriate data structure for representing of such events is the priority queue. Demonstrate by writing an algorithm or a flowchart how to insert the following interrupts in a heap so the highest priority element should move out first. Interrupts Priorities INT 0 100 INT 10 51 INT 11 52 INT 21 54Interrupts are system wide events that stops the execution of a currently running process. Examples of interrupts include (but are not limited to) mouse clicks, process termination, key presses, etc. Some interrupts are considered as more important to be handled first then the others. For example, a hardware interrupt such as hard drive read operation has lesser priority than a memory read. In this way, the most appropriate data structure for representing of such events is the priority queue. Demonstrate by writing an algorithm or a flowchart how to insert the following interrupts in a heap so the highest priority element should move out first. Interrupts Priorities INT 0 100 INT 10 51 INT 11 52 INT 21 54
- Basic deadlock questions: Select all of the following statements that are true. Reusable resources are produced and consumed dynamically. Interrupts, messages, and signals are examples of consumable resources. A deadlock means that at least two processes cannot continue working because they are waiting for each other. In order for a deadlock to occur only one of the four introduced deadlock conditions must apply. One of the four introduced deadlock conditions is non-preemption. A set of processes is in a safe state S if S is not a deadlock state and any state T reachable from S is not a deadlock state.The following results would occur if certain processes were abandoned when a deadlock was reached:What describes how the principle of least privlege applies to the use of computers? A, It guarantees that no information inifially held in an object can be used outside its execution environment B, A process is allowed access only to the resources il needs to complete Its task and limit damage from a faulty process C, It is a process that can access an object in a domain only if that domain has a key that malches one of the locks of the object D It is the use of access controls to monitor and limit access to applications, programs, and websites during specific times of use.