I belive its true but i am not a 100% sure
<span>getchar() only reads a single character input from any input stream.
getche() </span><span>reads a single character from the keyboard and displays immediately on output screen without waiting for enter key
scanf() reads the whole input line according to the data type you specified.</span>
I believe the answer is Virtual Private Network (VPN).
Know this answer is late, but im doing my deed hoping i this can help someone else pass this darn class. Best of Luck to whoever is taking the same course. You can do it if my lazy self can do it! It'll be okay ;)