Bounded waiting requires that \A bound must exist on the number of times that other processes are allowed to enter their critical sections a) true b) false
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Bounded waiting requires that \A bound must exist on the number of times that other processes are allowed to enter their critical sections
a) true
b) false
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- Real Time Scheduling: Select all statements below that are true EDF scheduling assigns the highest priority to a process with the smallest remaining time until its deadline. RM scheduling assigns a higher priority to processes with shorter periods. Rate Monotonic (RM) scheduling works by dividing the total amount of time available into an equal number of shares, and then each process must request a certain share of the total when it tries to start. If a process has period p, it is activated every p units of time. A real-time system is schedulable under Earliest Deadline First (EDF) when its overall CPU utilization is less than or equal to 1. A real-time system is schedulable under RM when its overall CPU utilization is less than 1.Critical Sections - Select all of the following statements that are true A critical section is a segment of code in which a process has write-access to data or resources that are shared with at least one other process. Every process waiting to enter a critical section must be allowed to enter it at some point. No eternal waiting must be possible. In a system consisting of n processes, a critical section protected by a mutex variable can be accessed by more than one process at a time. A process not executing in a critical section must not prevent other processes from entering the critical section. Critical sections must never contain data shared by multiple processes. O DELL Wall of these conditions must be to happen the deadlock state else : process termination circular wait mutual exclusion hold and wait
- Explain how wait() is used to end a process, preferably with an example of its use in code.Process Scheduling: Select all statements below that are true The time quantum T for RR should be larger than the average CPU demand between two I/O operations (CPU burst) of 80% of the processes. Round Robin (RR) imposes a fixed time quantum (time slice) on the amount of continuous CPU time that can be used by a process. Shortest Job First (SJF) is a preemptive scheduling method. Waiting time refers to the time a processor spends in the ready state waiting for the processor. First-In / First-Out (FIFO) scheduling assigns higher priorities to processes that arrive earlier. Shortest Remaining Time (SRJ) is a nonpreemptive version of SJF.Please define wait()'s role in process termination if you have a code example.
- 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…Shortest remaining time and shortest process next have similar selection function. Select one: a.FALSE b.TRUEin C++ please create a Priority : -pre-emptive algorithm code: here are information that will help you Tasks: • Lab 4: Process management • Review Process management algorithms Definitions: (in terms for this lab not formal definitions) • Preemptive: When a new process arrives and has a higher priority than the current running process, Then the current running process is paused and put back in the waiting queue, and the new process starts executing. In most systems it will automatically interrupt the current running job when the new job arrives, however some systems use a predetermined interval (a certain number of time units), to check for new jobs. • Non preemptive: Take no action when a process with higher priority arrives,when a new process with a higher precedence arrives current running process need to finish first before the new process goes Oxford definition: Preempt – to take action in order to prevent (an anticipated event) from happening; forestall. • Metric: a metric is…
- ) Process begin A:Bi1; end process Concurrent SequentialAssume 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.......................................If you have many processes that are running concurrently, some code is a critical section if one of the following options among others is true : a. At least one process is reading O b. At least one process is writing c. All processes should be writing d. At least one process is reading and at least one process is writing e. All processes should be reading