Using the file descriptor table for a process, answer the following questions. Note: the dup(), pipe() , and open() system calls always use the lowest numbered available file descriptor posi-tion.

(a) Label which entries in Table 2 refer to stdin, stdout, andstderr

0	1	2	3	4	5

(b) Assume that stdin, stdout, and stderr are all open. Label in Table 3 what the file descriptor table would look like after the following code is executed:

int fd[2]; close(1); pipe(fd);

0	1	2	3	4	5

(c) Assuming a fresh file descriptor table with only stdin, stdout, and stderr open, show in Table 4 the contents of file descriptor table after thefollowing code is executed:

close(2); dup(1);

0	1	2	3	4	5