An engineer needs to back up the firewall configuration. Now he wants to use a command to view all the current configurations of the firewall. May I ask the command he uses is ____[fill in the blank]*

• A.current-configuration
• B.display current-configuration

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The following description of IDS, which items are correct
The IDS cannot be linked to the firewall.

• A.The IDS can be upgraded flexibly and in a timely manner, and the strategic configuration operation is convenient and flexible.
• B.Mouth IDS is a fine-grained detection device, through which the live network can be monitored more accurately.
• C.With IDS, system administrators can capture traffic from critical nodes and do intelligent analysis to find anomalous and suspicious network behavior and report it to administrators.

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For which of the following parameters can the packet filtering firewall filter?

• A.IP address of the port source destination
• B.The MAC address of the source destination
• C.Port number and protocol number of the port source
• D.Port packet payload

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The following description of digital certificates, which one is wrong

• A.The simplest certificate consists of a public key, a name, and a digital signature from a certificate authority.
• B.Digital certificates do not solve the problem of digital signature technology where the public key cannot be determined to be the designated owner.
• C.In general, the key of a digital certificate has an expiration date.
• D.Digital certificates contain the owner's public key and related identity information.

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Which of the following descriptions of server authentication is correct?

• A.The visitor sends the username and password that identifies his identity to the third-party authentication server, and after the authentication is passed, the third-party authentication server sends the visitor's identity information to FW.
• B.The visitor sends the username and password that identifies his identity to FW through the portal authentication page, there is no password stored on F7, FT sends the username and password to a third-party authentication server, and the verification process is carried out on the authentication server.
• C.Visitors obtain the SMS verification code through the Portal authentication page, and then enter the SMS verification code to pass the authentication.
• D.The visitor sends the username and password that identifies them to the FW through the portal authentication page, on which the password is stored and the verification process takes place on the FW.

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