Let the processes P1, P2, P3, and P4 be given. They arrive in the system at the same time in this order. The processes have the following service times (in time units): Process Service time (CPU burst) P1 53 P2 17 P3 68 P4 24 Menoch For the scheduling method "Round Robin" (RR), specify the average execution time (average turnaround time) and the number of context
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- A deadlock is the very unpleasant situation that may occur in very dynamic world of running processes, a situation that must be avoided at all costs. One famous algorithm for deadlock avoidance is the Banker's algorithm for deadlock avoidance. The version of this algorithm presented in this module's commentary gives just one solution (the Greedy approach). Consider the Greedy approach to the Banker's algorithm. Give an example of application of this algorithm for 7 processes (named P1, ... , P7) and 5 resource types (named R1, ... , R5). Start by listing the matrices involved in this algorithm, that constitute its input data; also, do not forget to mention the overall resources of each type available in this fictional system. Proceed by describing the algorithm, step by step; for each step, mention the test performed, which process was chosen, what is the old and new status of the Work array, etc. In the end, list the solution, that is the safe sequence of processes resulting from this…nterruptions are occurrences that cause the usual flow of execution to be interrupted. Give five distinct occurrences that might lead to a disruption.Abstract: the main purpose of this experiment is build real time system using PPI 8255 to control devices connected to. Problem description: assume that there are two devices are connected to port A and two sensors are connected to port B of PPI 8255. They work according to the following table Devices (DID2) 01 10 Sensors (S1S2) 00 01 10 11 11 00 Write a program to control these two devices according to the values of sensors. Each group should submit a zip file which contains the following files Code file: (assembly language code) - Simulation file Report (pdf file) (details of every single step in the code, also what have you learned from this experiment)
- Perform the given task.Write a program that simulates a toy paging system that uses the WSClock algorithm. The system is a toy in that we will assume there are no write references (not very realistic), and process termination and creation are ignored (eternal life). The inputs will be: The reclamation age threshhold The clock interrupt interval expressed as number of memory references A file containing the sequence of page references Describe the basic data structures and algorithms in your implementation. Show that your simulation behaves as expected for a simple (but nontrivial) input example. Plot the number of page faults and working set size per 1000 memory references. Explain what is needed to extend the program to handle a page reference stream that also includes writes.The task is to implement part of a linter program using python. Specifically, you must be able to scan for grouping symbols ( "()", "[]", "{}” ) and ensure that there are no hanging open symbols or stray closing symbols in the source file. The implementation must involve recursion in terms of scanning for the scope. If a different closing symbol is encountered or the end of file is reached, the error message "Line : missing closing symbol for "" should be displayed. For stray closing tags, the message "Line : stray closing symbol for "". Note: Do not use "stack" in your code.
- The goal of this second exercise is to develop a better understanding of the Linuxinterprocess communication mechanisms. This would require you to write twoprograms P1 and P2. The first program P1 needs to generate an array of 50random strings (of characters) of fixed length each. P1 then sends a group offive consecutive elements of the array of strings to P2 along with the ID’s ofthe strings, where the ID is the index of the array corresponding to the string.The second program P2 needs to accept the received strings, and send backthe highest ID received back to P1 to acknowledge the strings received. Theprogram P2 simply prints the ID’s and the strings on the console. On receivingthe acknowledged packet, P1 sends the next five strings, with the string elementsstarting from the successor of the acknowledged ID. The above mechanism needs to be implemented FIFO and UNIX DOMAIN SOCKETS. Please note that you may NOT make assumptions about the reliability of the interprocess communication…Python: The min method for the UnsortedPriorityQueue class executes in O(n) time, as analyzed in Table 9.2. Give a simple modification to the class so that min runs in O(1) time. Explain any necessary modifications to other methods of the class.Design and implement a service that simulates PHP loops. Each of the three loop variants should be encapsulated in an object. The service can be controlled via a parameter and execute three different simulations. The result is returned as JSON. The input is an array consisting of the letters $characters = [A-Z]. -The For loop should store all even letters in an array.-The Foreach loop simulation is to create a backward sorted array by For loop, i.e. [Z-A] .-The While loop should write all characters into an array until the desired character is found. Interface:-GET Parameter String: loopType ( possible values: REVERSE, EVEN, UNTIL )-GET parameter String: until (up to which character) Output:JSON Object: {loopName: <string>, result: <array> }
- Assume you have a folders of (images and videos) in your computer which contain some random mix numerical values. Your task is to separate images (e.g odd values) and videos (e.g Even values). So that all the images and videos are stored in separate folders (lists). While separating make sure that any of the folder (lists) should not contain any duplicate file or duplicate value. In this task images and videos odd & even numbers and folder means a single list of mix value. e.g: linkedlists (odd, even). Design a method for above task which will create two separate linked lists and write main method to test your program. FOLDER (VIDEO AND IMAGES:ODD AND EVEN VALUES) LIST 0: [2, 44 , 24 , 82 , 33 , 44 , 55 , 11 , 2 , 44 , 55]: EVEN VALUES_LIST 1: [2, 44 , 24 , 82]: A=2, B=44, C=24, D=82 ODD VALUES:_LIST 2: [33 , 44 , 55 , 11]: A=33, B=45, C=55, D=11You are required to make changes in the above programs and introduce the use of compaction where required. Write code to simulate Worst-Fit Algorithm TASK2: DESCRIPTION One of the simplest methods for memory allocation is to divide memory into several fixed-sized partitions. Each partition may contain exactly one process. In this multiple-partition method, when a partition is free, a process is selected from the input queue and is loaded into the free partition. When the process terminates, the partition becomes available for another process. The operating system keeps a table indicating which parts of memory are available and which are occupied. Finally, when a process arrives and needs memory, a memory section large enough for this process is provided. When it is time to load or swap a process into main memory, and if there is more than one free block of memory of sufficient size, then the operating system must decide which free block to allocate. Best-fit strategy chooses the block…You are required to make changes in the above programs and introduce the use of compaction where required. Write code to simulate Worst-Fit Algorithm TASK2: DESCRIPTION One of the simplest methods for memory allocation is to divide memory into several fixed-sized partitions. Each partition may contain exactly one process. In this multiple-partition method, when a partition is free, a process is selected from the input queue and is loaded into the free partition. When the process terminates, the partition becomes available for another process. The operating system keeps a table indicating which parts of memory are available and which are occupied. Finally, when a process arrives and needs memory, a memory section large enough for this process is provided. When it is time to load or swap a process into main memory, and if there is more than one free block of memory of sufficient size, then the operating system must decide which free block to allocate. Best-fit strategy chooses the block…