When using the passive mode to establish an FTP connection, use port 20 for the control channel and port 21 for the data channel.

• A.True
• B.False

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On the USG series firewall, after configuring the web redirection, the the authentication page cannot pop up. Which item below does not belong to the cause?

• A.Unenable WEB authentication function
• B.Unconfigured authentication policy or authentication policy configuration error
• C.Browser SSL version is not matched with the firewall authentication page SSL version
• D.The port number of the authentication page service is set to 8887

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Which of the following statements are true about port mirroring? (multiple choice)

• A.The observing port replicates the packets to the mirroring port
• B.The observing port sends the received packets to the monitoring device
• C.The mirror port sends the received packets to the monitoring device
• D.The mirror port replicates the packets to the observing port

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The process of electronic evidence collection includes: protecting the scene, obtaining evidence, preserving evidence, identifying evidence, analyzing evidence, tracking and presenting evidence.

• A.False
• B.True

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Regarding the description of the buffer overflow attack, which of the following options are correct? (Multiple choice)

• A.Buffer overflow attack exploits the flaws in the memory operation of the software system to run the attack code with high operating authority
• B.Buffer overflow attacks are application layer attacks
• C.Buffer overflow attack is one of the common methods in the behavior of attacking software systems
• D.Buffer overflow attacks have nothing to do with operating system vulnerabilities and architecture

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