Fill in the blanks: VPN gateways authenticate using ___________ and ___________ .
A. Passwords; tokens
B. Certificates; pre-shared secrets
C. Certificates; passwords
D. Tokens; pre-shared secrets
Explanation: VPN gateways authenticate using Digital Certificates and Pre-shared secrets.
Reference: https://sc1.checkpoint.com/documents/R77/CP_R77_VPN_AdminGuide/85469.htm