UDP is a connectionless protocol. A large number of UDP flood attacks cause the performance of network devices that rely on session forwarding to be degraded and even the session table is exhausted, causing network congestion.
Which of the following options does not prevent UDP flood attacks?

• A.UDP fingerprint learning
• B.First packet discarded
• C.Associated defense
• D.Current limiting

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Which of the following options describes the IntelliSense engine IAE incorrectly?

• A.The security detection of the IAE engine is parallel, using a message-based file processing mechanism, which can receive file fragments and perform security checks.
• B.The core of C.IAE is to organically centralize all content security-related detection functions.
• C.Full English name: intelligent Awareness Engine.
• D.lAE's content security detection functions include application identification and perception, intrusion prevention, and Web application security.

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Which of the following statements is true about the process of file filtering?

• A.If the file type is a compressed file, then after file filtering detection, the file will be sent to the file decompression module for decompression and decompressing the original file. If decompression fails, the file will no longer be filtered.
• B.There are two alarms and blocking actions.
• C.If all the parameters of the file can match all the file filtering rules, the module will perform the action of this file filtering rule.
• D.The file filtering module will match the application type, file type, transmission direction of the file identified by the previous module and the file filter rule query table configured by the administrator from top to bottom.

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Which of the following options is not a feature of big data technology?

• A.Low value density
• B.The data boy is huge
• C.A wide variety of data
• D.Slow processing speed

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Regarding the description of file reputation technology in anti-virus engines, which of the following options is correct?

• A.Local reputation MD5 cache only has static cache, which needs to be updated regularly
• B.File reputation database can only be upgraded by manual upgrade
• C.File reputation database update and upgrade can only be achieved through linkage with sandbox
• D.File reputation is to perform virus detection by calculating the full text MD5 of the file to be tested and matching it with the local reputation MD5 cache

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