3:03 ... 100% Paragraph (1) - Saved Paragraph #4 - A business process is a structured set of activities that produce a result. In this company there are a number of steps that deal with their Change Management process. The first step necessary to the process requires that the requested change must be evaluated. This helps determine how beneficial the change would be. Determining the priority of the accepted request comes next. The newly accepted request must be ranked with those previously chosen to determine its time line. Then, the change time for the developmental step is reached. Eventually the change is implemented. Review is the last step in this business process. It's time to determine how successful the change has been. 7. List the five transition words used in this process to introduce our major details. ↑ CD

3:03 ... 100% Paragraph (1) - Saved Paragraph #4 - A business process is a structured set of activities that produce a result. In this company there are a number of steps that deal with their Change Management process. The first step necessary to the process requires that the requested change must be evaluated. This helps determine how beneficial the change would be. Determining the priority of the accepted request comes next. The newly accepted request must be ranked with those previously chosen to determine its time line. Then, the change time for the developmental step is reached. Eventually the change is implemented. Review is the last step in this business process. It's time to determine how successful the change has been. 7. List the five transition words used in this process to introduce our major details. ↑ CD

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Problem 1. Consider the following code example for allocating and releasing, which can be concurrently called by multiple processes to fork new processes. #define MAX_PROCESSES 255 int number_of_processes = 0; // a shared variable /* the implementation of fork() calls this function */ int allocate_process() { int new_pid; if (number_of_processes == MAX_PROCESSES) return -1; else { /* code to allocate necessary process resources */ ++number_of_processes; return new_pid; } } /* the implementation of exit() calls this function */ void release_process() { /* code to release process resources */ --number_of_processes; }Using the Semaphore structure and its atomic wait() and signal() operations to solve a critical section (mutual exclusion)…
73. 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 deadlock
Please refer to this textbook: “A. Silberschatz, P. B. Galvin and G. Gagne, “Operating System Principles,”7th Edition, John Wiley & Sons Inc., 2006.” And answer the following questions: Question:The Ricart& Argwala mutual exclusion algorithm: (a) Does not depend on time stamps in messages while Lamport's does. (b) Cannot handle the case where two or more processes request the same resource at the same time. (c) Does not require a process to send messages to the entire group while Lamport's does. (d) Requires fewer messages than Lamport's algorithm.
Topic: Concepts of programming Language Kindly provide a bit detailed answer 4. a) Consider the following program, written in JavaScript-like syntax:// main programvar x, y, z;function sub1() {var a, x, z;. . . }function sub2() {var a, b, y;. . .}function sub3() {var a, y, w;. . .}Given the following calling sequences and assuming that dynamic scoping isused, what variables are visible during execution of the last subprogramactivated? Include with each visible variable the name of the unit where it isdeclared.“main calls sub1; sub1 calls sub3; sub3 calls sub2.”
1. Write a LINUX C code for Banker’s Algorithm to deadlock avoidance.Note: Consider a system with five processes (P0–P4) and three resources (A, B, C). There are 9 instances of resource type A, 4 instances of resource type B, and 6 instances of resource type C
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Please explain step by step how processes are created. 1. Including the parent process, how many processes are created by the following program? Assumethat all fork() system calls succeed. #include <unistd.h>#include <stdio.h>int main(int argc, char **argv) {for (int i = 0; i < 3; i++)fork();/* ... */}2. Given the following program, please determine how many times the word “hello” is printed out.Assume that fork() is always successful. #include <sys/types.h>#include <stdio.h>int main() {pid_t a, b;a = fork();b = fork();if (a == 0)b = fork();if (b == 0)a = fork();printf(“hello\n”);return 0;} 2. Given the following program, please determine how many times the word “hello” is printed out.Assume that fork() is always successful. [1 pt]#include <sys/types.h>#include <stdio.h>int main() {pid_t a, b;a = fork();b = fork();if (a == 0)b = fork();if (b == 0)a = fork();printf(“hello\n”);return 0;}
11 Consider a situation where 5 instances of a resource are available. That means maximum 5 processes are allowed to enter the critical section at any point in time. Please provide a solution using a counting semaphore. Write the pseudocode for each process.
84. A system is in a safe state only if there exists a : a. safe allocation b. safe resource c. safe sequence d. all of the mentioned
A deadlock occurs when a group of processes is stalled because one process is holding a resource and waiting for another process to obtain it. Consider the situation when two trains are approaching each other on the same track and there is only one track: once they are in front of each other, neither train can proceed. In operating systems, a similar scenario happens when two or more processes possess certain resources while waiting on resources owned by other processes (s). In the picture below, Process 1 is holding Resource 1 and waiting for Process 2 to acquire Resource 2, while Process 2 is waiting for Resource 1. Give an example of a realistic deadlock avoidance approach and describe the basic strategy behind it.
Ch-6 1. The first known correct software solution to the critical-section problem for n processes with a lower bound on waiting of n − 1 turns was presented by Eisenberg and McGuire. The processes share the following variables: enum pstate { idle, want_in, in_cs}; pstate flag[n]; int turn; All the elements of flag are initially idle. The initial value of turn is immaterial (between 0 andn-1).ThestructureofprocessPi isshowninthefollowingFigure.Provethatthe algorithm satisfies all three requirements for the critical-section problem.
Computer Science Assume we have a program with the following source code, where S1, S2, S3, S4 and S5 are systems calls we can monitor at run-time. 1) S1 2) while (S2) 3) { S3; 4) if (S4) 5) S5; 6) else S2; 7) if (...) S2; 8) else S5 9) } 10) S2; 11) S3; List all the possible 3-grams of system calls (Here we don’t consider Program Counter (PC) or state information)