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- 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.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)Write a C program that contains two processes; parent and child. Each process will print out a message indicates its number, and its parent number. These messages will print out into a txt file named "yourname.txt" Output.txt will be like this I'm the parent process, my ID is ###, my parent ID is ### I'm the child process, my Id is ###, my parent ID is ### Output.txt Notes: 1- Submit your code as a file named with (yourname.sh) only. Be sure to submit an error free, and executable file. 2- Assume that "yourname.txt"will be on the same working directory.
- Please DO NOT respond to this question by copy/pasting the code provided elsewhere on the site, none of those work. Thanks. Virtual Memory Lab This lab project addresses the implementation of page-replacement algorithms in a demand-paging system. Each process in a demand-paging system has a page table that contains a list of entries. For each logical page of the process, there is an entry in the table that indicates if the page is in memory. If the page is in memory, the memory frame number that page is resident in is indicated. Also, for each page, the time at which the page has arrived in memory, the time at which it has been last referenced, and the number of times the page has been referenced since the page arrived in memory are maintained. The page table data structure is a simple array of page-table entries (PTEs). Each PTE contains five fields as defined below: struct PTE { int is_valid; int frame_number; int arrival_timestamp; int…Linux In C++ Using fork() and wait(), write a program where a parent process A creates a child process B, then B creates C, C sleeps for some time, wakes up, and terminates after telling B. B then terminates after signaling A, and finally A terminates.you are to design a printer queue that is responsible for handling the printing requests coming from different users. You have to take into consideration that users have different levels of priorities. Each user has an identification number and a password, in addition to printing 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 printing request received, the program should check the priorities of that request and whether it can be moved forward in the queue to be served by the printer prior to serving the other requests. Using the programming language of your choice (preferably C++), write the printer queue that would handle the user request. The program must allow for requests coming from different users or from one user. Note: I need a working C++ code for this problem, and i need priorities.
- Consider a system with the four access operations read, write, grant, and revoke. You can use grant not only to give other subjects read and write access, but also to grant them the right to grant access to the objects you own. Which data structure and algorithm would you use to implement the grant and revoke operation so that you can revoke all access to an object you own?Problem: Implement a part of functionality for the Netflix DVD queue. It's a service that allows a user to create a list of desired movies and then sends DVDs with movies on top (what we called head in our lectures) of this list to the subscriber one at a time. A subscriber should be able to create a list of desired movies and manipulate the order in a movie queue in their account. Your program will implement some of the desired functionality by storing the list of movie titles in a linked list. You are provided with the following files available in the "Downloadable files" section: MovieList.h contains a class declaration for the class that represents a list of movies. top refers to the head position of a list and bottom refers to the tail or end position of a list. Driver.cpp contains the main function you can use to test your implementation. *** NOTE: Please do not change any of the function names since our automated test script calls those functions. Changing function names or…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.
- Computer Science Write in the programming language Pythona pushdown automaton simulator (a program that simulates a pushdown automaton) where: V = {w | w ∈ {a, b}* and w starts and ends with the same symbol}.Computer Science Implement RSA encryption and decryption functions in Java. Note you should not use any existing security modules to perform the encryption/decryption tasks. Just write a program to compute the answers. Your program should ask user’s input for a public key (n, e), and for Q1 ask for m and display c; and ask for c and display private key d and original message m.2. Implement the frame replacement algorithm for virtual memory In Java For this task, you need to perform the simulation of page replacement algorithms. Create a Java program which allows the user to specify: • the total of frames currently exist in memory (F), the total of page requests (N) to be processed, • the list or sequence of N page requests involved, For example, if N is 10, user must input a list of 10 values (ranging between 0 to TP-1) as the request sequence. Optionally you may also get additional input, the total of pages (TP) This input is optional for your program/work. It only be used to verify that each of the page number given in the request list is valid or invalid. Valid page number should be within the range 0, .. , TP-1. Page number outside the range is invalid. Then use the input data to calculate the number of page faults produced by each of the following page replacement algorithms: • First-in-first-out (FIFO) - the candidate that is the first one that entered…