After the automatic backup function is enabled, both commands and status information will be periodically backed up to the backup device.

If there are multiple levels of CAs in the PKI system, a CA hierarchy will be formed. The top-level CA is the root CA, which has a CA "self-signed" certificate.

Which of the following options are characteristics of symmetric encryption algorithms? (Multiple Choice)

In addition to supporting built-in Portal authentication, the firewall also supports custom Portal authentication. When custom Portal authentication is used, there is no need to deploy an external Portal server separately.

Which of the following is applicable to a scenario where there are few Internet users and the number of public network addresses is the same as the number of simultaneous Internet users?