Which of the following options does not belong to the security risk of the TCP/IP stack application layer?

• A.Virus
• B.Port scanning
• C.Buffer overflow
• D.System vulnerabilities

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Abnormal detection is to establish the normal behavior characteristic profile of the system subject through the analysis of the audit data of the system: check if the audit data in the system If there is a big discrepancy with the normal behavior characteristics of the established subject, it is considered an intrusion. Nasu must be used as the system subject? (multiple choice)

• A.Single user
• B.A key program and file in the system
• C.A group of users
• D.Host

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If the Huawei USG600 product uses its own protocol stack cache for all files passing through the device and then performs a virus scan, then the device uses It is the stream scanning method.

• A.False
• B.True

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Which of the following options is not a feature of Trojan horses?

• A.The ultimate intention is to steal information and implement remote monitoring
• B.Trojans self-replicate and spread
• C.Actively infectious
• D.Not self-replicating but parasitic

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Which of the following description is correct about the Management Center?

• A.The data collector is responsible for abnormal traffic cleaning, centralized device management configuration, and business report presentation.
• B.The data collector and management server support distributed deployment and centralized deployment. Centralized deployment has good scalability.
• C.The management server of the management center is responsible for the cleaning of abnormal traffic, as well as the collection, analysis, aggregation, and storage of service data, and is responsible for reporting the summarized traffic to the management server for report presentation.
• D.Management Center is divided into two parts: management server and data collector.

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