14) On your terminal (we are talking about Unix or Linux home directory terminal)

Type umask

Most of you may see 022, what that means?

Create a file name fool

Check the permission on foo

Is -I foo1 -....------> show what you see in rwx format

Change the umask to 027, then check the permission on file foo1, did it change anything?

Create a new file name foo3, check the permission on this file

Is -I f003 ----------show what you see in rwx or Octal format