5.[11 points] Consider the RPC mechanism. Describe the undesirable consequences that could arise from not enforcing either the "at most once" or "exactly once" semantic. Describe possible uses for a mechanism that has neither of these guarantees. 6. [16 points] Including the initial parent process, how many processes are created by the program shown below? #include #include int main() int i; for (i = 0; i #include #include int main() pid_t pid; /* fork a child process "/ pid = fork(); %3D if (pid It; 0) {/* error occurred / fprintf(stderr, "Fork Failed"); return 1; else if (pid == 0){/* child process */ execlp("/bin/Is","Is",NULL); printf("LINE J"); else (/* parent process */ /* parent will wait for the child to complete */ wait(NULL); printf("Child Complete"); return 0