A.After the application layer receives the data packet, the application layer information is stripped after parsing, and the user data displayed at the end is exactly the same as the data sent by the sender host.

B.After receiving the data packet, the network layer is stripped after parsing, and the upper layer processing protocol is known according to the parsing information, such as HTTP.

C.After the transport layer (TCP) receives the data packet, the transport layer information is stripped after parsing, and the upper layer processing protocol, such as UDP, is known according to the parsing information.

D.The data packet is first transmitted to the data link layer. After parsing, the data link layer information is stripped, and the network layer information is known according to the parsing information, such as IP.

A.Used to generate a secret algorithm

B.IPSec SA is one-way

C.IPSec SA is two-way

D.used to generate anencryption key

A.between the host and the host

B.between tunnel mode and transport mode

C.between hosts and security gateways

D.between security gateways

A.Intermediaries and IP/MAC spoofing attacks

B.Counterfeit DHCP lease renewal packet attack using option82 field

C.DHCP Server counterfeiter attack

D.IP spoofing attack

A.True

B.False