In the event that such processes reach a stalemate, an end should be put to them.
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In the event that such processes reach a stalemate, an end should be put to them.
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- b) Create the following path expressions. There can be only 4 instances of B at any given time, concurrently to this the processes A and C work maximally one instance in mutual exclusion. 4:(B), 1: (A; C) The process C has to be executed before th concurrent processes A and B. C:(A, B) Process A can be executed, after the process B or C have been finished. B and C can be active with two incarnations. 2: (B, C); A73. 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 deadlockA process should remain in the critical section for a finite time only is one of the basics of mutual exclusion. Select one: a.FALSE b.TRUE
- In this project you are to design a process queue that is responsible for handling the process requests coming from different users. You have to take into consideration that users have different levels of privileges and priorities. Each user has an identification number and a password, in addition to process priorities. One good idea is to design the queue using an array or pointers while preserving the first-in first-out concept of the queue. For every process request received, the program should check the privileges of that request and whether it can be moved forward in the queue to be served by the operating system prior to serving the other requests. Using the programming language of your choice (preferably C+), write the process queue that would handle the user request. The program must allow for requests coming from different users or from one user.Assume that there are the following processes in the deadline scheduler queue: Process Arrival Runtime Period Deadline 1 0 2 12 10 2 2 4 20 16 3 4 3 15 14 Complete the following schedule so each of the processes adheres to the deadline policy by replacing a dot with a process number (as necessary): TIME: 01234567890123456789012345678901234567890123456789 PROCESS: 112222333.......................................Write a C program which creates two childprocesses. One of the child processes mustopen data1.txt and fill it with 10 randomintegers (0-9). The other child process mustopen data2.txt and fill it with 10 randomletters (a-z). In the meanwhile, parent mustprint both child processes' id's and wait forthem to finish.
- Which of the following statements is true? (A) There are languages that can be recognized by an NFA which cannot be recognized by a DFA. (B) Languages recognized by NFAs cannot be recognized by DFAs because they can have infinitely many active threads at any given time. (C) If L is a language recognized by an NFA then there is a DFA that can recognize L. (D) Every language is recognized by an NFA because they are subsets of Σ∗.Can you imagine a situation where a single threaded process might get stuck in a deadlock? In the following sentence, please provide more information about your solution.A Deadlock condition in which, multiple processes are not allowed to use the same resource at the same time. This condition is known as a. Mutual Exclusion O b. Hold and Wait O c. No Preemption O d. Circular Wait
- Assume a binary semaphore variable, S is initialized to 1. The semaphore operations flow which is wait (S) – critical section – signal (S) has been changed. The new flow is omits the wait (S), or the signal (S), or both. What will happened in this situation? Select one: a.several processes maybe executing in their critical section b.either mutual exclusion is violated or a deadlock will occur. c.processes will starve to enter critical sectionLinear Temporal Logic Suppose we have two users: A and B, and a single resource: console. Every now and then, both users would want to use the console. Since there is only once console, only one user can use it at a time. Suppose that we have the following atomic propositions for user A: A.request indicates that User A requests usage of the console, A.use indicates that User A is using the console, A.release indicates that User A releases the console. For User B, we also have similar propositions. Specify the following properties in LTL a. Mutual exclusion, i.e., only one user at a time can use the console. b. Finite time of usage, i.e., a user can use the console only for a finite amount of time. c. Absence of individual starvation, i.e., if a user wants to use the console, they eventually can. d. Absence of blocking, i.e., a user can always request to use the console. e. Alternating access, i.e., users must strictly alternate in using the console.When a process holds an allocated resource and it cannot be taken away, what condition of a deadlocked state does this create? mutual exclusion no preemption hold and wait none are correct circular wait
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