which two statements about PPP PAP arc true? (choose two)

which two statements about PPP PAP arc true? (choose two)

A.IT REQUIRES TWO-WAY AUTHENTICATION.

B.IT CAN PROTECT AGAINST PLAYBACK ATTACKS.

C.IT IS SUPPORTED ONLY ON SYNCHRONOUS INTERFACES.

D.IT IS VULNERABLE TO TRIAL-AND ERROR ATTACKS.

E.LOGIN ATTEMPTS ARE CONTROLLED BY THE REMOTE NODE.

正确答案是DE