For an effective operating system, when to check for deadlock? a) every time a resource request is made at fixed time intervals b) at fixed time intervals c) every time a resource request is made d) none of the mentioned
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Q: For effective operating system, when to check for deadlock?
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- For an effective operating system, when to check for deadlock?a) every time a resource request is made at fixed time intervalsb) at fixed time intervalsc) every time a resource request is maded) none of the mentioned59. 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 mentioned5. 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
- 83. A state is safe, if : a. the system does not crash due to deadlock occurrence b. the system can allocate resources to each process in some order and still avoid a deadlock c. the state keeps the system protected and safe d. all of the mentionedProtection is critical in the smooth operation of Operating System. However, to allow flexibility, we need to place minimal constraints upon user. Follows a list of operations which are usually protected. Select the minimal set of instructions which must be protected? Give reason. Change to user mode. Change to kernel mode. Read from kernel memory. Write into kernel memory. Instruction fetch from kernel memory. Turn on timer interrupt. Turn off timer interrupt.76. To ensure that the hold and wait condition never occurs in the system, it must be ensured that : a. whenever a resource is requested by a process, it is not holding any other resources b. each process must request and be allocated all its resources before it begins its execution c. a process can request resources only when it has none d. all of the mentioned
- The term "prevent deadlock" refers to the act of avoiding a situation in which two or more processes are unable to proceed because each is waiting for one of the others to do something. What is the methodology for accomplishing this task within the given operating system?An operating system uses a total of two units of the resource R for each of its three user processes. The operating system uses a total of 12 units of R. The absolute minimum number of R units that must be used to guarantee that there are no deadlocks isQuestion- Provide technical reasoning for the following statements: In a typical desktop based operating system, execution of deadlock detection techniques at each resource request is undesirable. The two-state process model is inadequate representation of process states. Long-term scheduler executes relatively infrequently as compared to the other two medium and short-term schedulers. In dynamic memory partitioning, though compaction is beneficial but its frequent running is not desirable.
- What is a deadlock in the context of operating systems? Describe the conditions that must be met for a deadlock to occur.2).Discuss the necessary conditions for deadlock and how their occurance matters? Subject Operating System Please answered with zero plagiarism.1. In which file is function acquire() defined? 2. Which function can be used to locate the PCB of the current process? 3. What is a lock? 4. A CPU scheduler must acquire the ____ of the ptable in order to avoid race conditions with other schedulers. 5. What happens when wait() finds a zombie process? 6. When a new process needs to be created, its PCB is set up during the execution of the function ______