Regarding the description of the authentication of Internet users and VPN access users, which of the following is wrong?

• A.The process of local authentication or server authentication for online users is basically the same, both of which authenticate users through authentication domains, and the user triggering methods are also the same
• B.After VPN users access the network, they can access the network resources of the corporate headquarters, and the firewall can control the accessible network resources based on the user's name
• C.After being authenticated, VPN access users will be online at the same time on the user online list
• D.Internet users and VPN access users share data, and user attribute checks (user status, account expiration time, etc.) are also effective for VPN access

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Intrusion Prevention System (IPS) is a defense system that can block intrusions in real time

• A.False
• B.True

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Please match the whole worm virus attack process and attack description.

Correct Answer:

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ASPF (Application Specific Packet Filter) is a packet filtering technology based on the application layer and implements a special security mechanism through the server-map table.
Regarding ASPF and server-map tables, which of the following are correct? (Multiple choice)

• A.ASPF dynamically allows multi-channel protocol data to pass through the server-map table
• B.The five-tuple server-map table entry implements a function similar to the session table
• C.ASPF can dynamically create server-map tables
• D.ASPF monitors the messages in the communication process

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Which of the following descriptions about digital fingerprints in digital signatures is wrong? ( )[Multiple choice]*

• A.The receiver will use the sender's public key to calculate the generated data fingerprint and compare it with the received digital fingerprint.
• B.Digital fingerprints are also known as information digests.
• C.It is the data obtained by the sender after calculating the plaintext information through the HASH algorithm.
• D.The receiver needs to use the sender's public key to unlock the digital signature to obtain the digital fingerprint.

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