For APT attacks, attackers often lurk for a long time and initiate formal attacks on the enterprise at key points of the incident. APT attacks can generally be summarized in four stages:
1. Collect Information & Invasion
2. Long-term latency & mining
3. Data leakage
4. Remote control and penetration
Which of the following options is correct regarding the ordering of these four phases?

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

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In the construction of information security, the intrusion detection system plays the role of a monitor. It monitors the flow of key nodes in the information system.
In-depth analysis to discover security incidents that are occurring. Which of the following are its characteristics?. c0O

• A.Cannot do in-depth inspection
• B.Unable to detect malicious operations or misoperations from internal killings.
• C.It is impossible to correctly analyze the malicious code doped in the allowed application data stream.
• D.IDS can be linked with firewalls and switches to become a powerful "assistant" of firewalls, which can better and more accurately control access between domains.

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What content can be filtered by the content filtering technology of Huawei USG6000? (Multiple choice)

• A.Voice content filtering
• B.Video content filtering
• C.File content filtering
• D.Application content filtering

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For special message attacks, which of the following option descriptions is correct?

• A.Special control message attacks do not have the ability to detect the network structure. Only scanning attacks can detect the network.
• B.The attacker probes the network structure by sending special control messages to launch a real attack.
• C.Special control message items can only use ICMP to construct attack messages.
• D.Special control packet attack is a potential attack and does not have direct destructive behavior

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An enterprise administrator configures the Web reputation system as shown in the figure. Regarding the configuration, which of the following statements is correct?

• A.The content in No. 4 must be configured.
• B.After the configuration is completed, you need to submit the configuration to take effect.
• C.The content in No. 2 must be configured.
• D.In addition to this page configuration, you also need to enable the firewall and sandbox linkage, otherwise the page configuration is invalid

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