Regarding the Anti-DDoS cloud cleaning solution; which of the following statements is wrong?

• A.Ordinary attacks will usually be cleaned locally first.
• B.Since the Cloud Cleaning Alliance will direct larger attack flows to the cloud for cleaning, it will cause network congestion.
• C.The closer to the attacked self-labeled cloud cleaning service, the priority will be called.
• D.If there is a large traffic attack on the network, send it to the cloud cleaning center to share the cleaning pressure.

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The processing flow of IPS has the following steps;
1. Reorganize application data
2. Match the signature
3. Message processing
4. Protocol identification
Which of the following is the correct order of the processing flow?

• A.4-1-2-3
• B.1-4-2-3
• C.2-4-1-3
• D.1-3-2-4

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

• A.File reputation database can only be upgraded by manual upgrade
• B.Local reputation MD5 cache only has static cache, which needs to be updated regularly
• 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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Which of the following is wrong about intrusion prevention?

• A.Intrusion prevention is a security mechanism that analyzes network traffic and detects intrusions (including buffer overflow attacks, Trojans, worms, etc.).
• B.Intrusion prevention is a new type of security technology that can detect and prevent intrusions.
• C.Intrusion prevention can block attacks in real time.
• D.Intrusion prevention technology, after discovering intrusions, must link firewalls to prevent intrusions

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Buffer overflows, Trojans, backdoor attacks, etc. are all application-level attacks.

• A.True
• B.False

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