Section 3 – HDLC/PPP - 3 Points
“Authenticate these links using the routers’ respective hostnames and the clear-text password CISCO.”
The requirement to use a “clear-text password” means that you’ll need to use PAP authentication.
Although this was an easy task, I did stumble at one point:
r3(config-if)#ppp pap sent-username r2 pass CISCO
PPP: Warning: You have chosen a username/password combination that
is valid for CHAP. This is a potential security hole.
DOH!!! It’s always good to remember what router you are configuring.