The following description of the AH protocol in IPSec VPN, which one is wrong?

Which of the following is not part of a digital certificate?

DDoS attack belongs to which attack type?

What do VLAN port types include? (Choose three.)

After the firewall uses the hrp standby config enable command to enable the standby device configuration function, all the information that can be backed up can be directly configured on the standby device, and the configuration on the standby device can be synchronized to the active device.