In the authentication policy of the firewall, _____ allows the user to not need to enter the user name and password, but can obtain the corresponding relationship between the user and the IP, so as to carry out policy management based on the user[fill in the blank]*
Drag the warning level of the network security emergency response on the left into the box on the right, and arrange it from top to bottom in order of severity.[fill in the blank]*
Which of the following is not the default security zone of the firewall ( )[Multiple choice]*
Digital envelope technology means that the sender uses the receiver's public key to encrypt the data, and then sends the ciphertext to the receiver ( )[Multiple choice]*
An enterprise wants to build a server system and requires the following functions: 1. The enterprise needs to have its own dedicated mailbox, and the sending and receiving of emails needs to go through the enterprise's server; 2. The server must provide file transfer and access services. Users in different departments of the enterprise provide accounts with different permissions: 3. When the enterprise accesses the internal webpage of the enterprise, the enterprise can directly enter the domain name in the browser to access. To meet the above requirements, which of the following servers do enterprises need to deploy? ( )*
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