Which of the following statement about IKE is the correct? (Multiple choice)

Which of the following statement about IKE is the correct? (Multiple choice)
A . IPSec has two negotiation modes to establish security associations. One is manual and the other is automatic IKE negotiation (isakmp).
B . The aggressive mode of IKE v1 can choose to find the corresponding authentication key and finally complete the negotiation according to the IP address or Name of the negotiation initiator.
C . The NA7 traversal function deletes the UDP port number verification process during IKE negotiation and implements the discovery function of the NAT gateway device in the VPN tunnel. If the NAT gateway device is found, UDP encapsulation will be used in the subsequent IPSec data transmission.
D . IKE security mechanisms include DH Diffie-Hellman exchange and key distribution, Perfect Forward Secrecy PFS, and SHA1 encryption algorithms.

View Answer

Answer: ABC