As shown in the figure, what is the authentication range of the AH protocol in tunnel mode?
Which of the following descriptions about the heartbeat interface is wrong ( )?[Multiple choice]*
In the TCP/P protocol core, which of the following protocols works at the application layer? ( )[Multiple choice]*
DES is a stream encryption algorithm, because the cipher capacity is only 56 bits, so it is not enough to deal with the weakness of insufficient security, and later 3DES was proposed.
