21:198:332:01 Operating Systems 1. Explain the concept of a context switch and describe the actions taken by a kernel to context switch between processes. 2. Using the following program, explain what the output will be at LINE A. Compile and run the program to verify your explanation (value.c file for the following program is provided. For compilation and execution of the c program, see the assignment 11). #include include #include int value = 5; int main() pid_t pid; pid - fork(); if (pid == 0) (/* child process */ value +- 15; return 0; else if (pid > 0) { /* parent process */ wait (NULL); printf("PARENT: value - 3d", value); /* LINE A */ return 0; Note: For problem 2, you need to submit your explanation along with the screenshot of the program output. .TFW LTE 8:26 AM COD 89% value.c #include #include #include int value = 5; int main() pid_t pid; pid = fork(); if (pid == 0) { /* child process */ value += 15; return 0; else if (pid > 0) { /* parent process */ wait (NULL); printf("PARENT: value = %d ", value); /* LINE return 0