An administrator has configured a dialup IPsec VPN with XAuth. Which statement best describes what occurs during this scenario?
A. Phase 1 negotiations will skip preshared key exchange.
B. Only digital certificates will be accepted as an authentication method in phase 1.C
C. Dialup clients must provide a username and password for authentication.
D. Dialup clients must provide their local ID during phase 2 negotiations.
C is correct, see FortiGate_Security_6.2_Study_Guide-Online.pdf page 656
C