When forwarding unicast data, the Layer 2 switch needs to decapsulate the Layer 3 header of the message before forwarding it.

Huawei NIP6000 can form an interface pair between two interfaces of the same type. Traffic entering from one interface is always forwarded through the other interface without querying the MAC address table.

Which of the following descriptions of PKI architecture are correct? (Multiple Choice)

Antivirus software and host firewall have the same function.

If the administrator uses the default authentication domain to authenticate the user, the user only needs to enter the user name when logging in; if the administrator uses the newly created authentication domain to authenticate the user, the user needs to enter "username@" when logging in. Certified domain name"