What is AFP

I'm studying for a mac exam (Apple 9L0-401) and one of the questions state that: I'm an administrator. Personal File Sharing is enabled on a Mac OS X computer that contains a standard user account. You use your admin account to connect to the computer via AFP. Which of the following share points will now be available for you to mount?

A. /Users/Public
B. /Users/Shared
C. Your home folder
D. The standard home folder
E. Macintosh HD (the boot volume)

I'm not sure what AFP is, therefore I don't understand the question completely.

Thanks!

G4 Power Mac Sawtooth AGP Mac OS X (10.3.9)