Regarding the anti-spam local black and white list, which of the following statements is wrong?

• A.The black and white list is matched by the sender's dns suffix
• B.The black and white list is matched by extracting the source IP address of the SMTP connection
• C.If the source IP address of the SMTP connection matches the blacklist, the connection will be blocked
• D.The black and white list is matched by extracting the destination IP address of the SMTP connection

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For Huawei USG600 products, which of the following statements about mail filtering configuration is correct?

• A.Cannot perform keyword filtering on incoming mail
• B.When the spam processing action is an alert, the email will be blocked and an alert will be generated
• C.Cannot control the number of received email attachments
• D.You can control the size of the attachment of the received mail

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With the continuous development of the network and the ever-changing applications, enterprise users have begun to transfer files on the network more and more frequently, and the resulting virus threats are also increasing. Only when the company rejects viruses outside the network can it ensure data security and system stability.
So, which of the following are the possible harms of the virus? (Multiple choices)

• A.Huawei USG6000 product can easily pass the defense.
• B.Some viruses can be used as invasive tools (such as the Trojan horse virus).
• C.Control host permissions, steal user data, and some viruses can even damage the host hardware.
• D.Threatening user host and network security.

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Which of the following options does not belong to packet message attack?

• A.Tracert packet attacks
• B.ICMP redirect packet attack
• C.IP fragmentation packet attacks
• D.Large ICMP packet attacks

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The virus signature database on the device needs to be continuously upgraded from the security center platform. Which of the following is the website of the security center platform?

• A.sec. huawei. com.
• B.security.. huawei. com
• C.www. huawei. com
• D.support.huaver: com

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