Anti DDoS seven-layer defense can work from the dimensions of interface-based defense, global defense and defense object-based defense.

• A.False
• B.True

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In the penetration stage of an APT attack, which of the following attack behaviors will the attacker generally have?

• A.Leak the acquired key data information to a third party of interest
• B.Long-term latency and collection of key data.
• C.The attacker sends a C&C attack or other remote commands to the infected host to spread the attack horizontally on the intranet.
• D.Through phishing emails, attachments with 0day vulnerabilities are carried, causing the user's terminal to become a springboard for attacks.

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A business administrator wants to prevent employees from accessing shopping websites during business hours. A URL filtering configuration file was then configured to select the shopping site in the predefined category as blocked. However, employee A can still use the company's network to shop online during the lunch break.
What are the possible reasons for the following? (Multiple choices)

• A.The administrator did not apply the URL filtering profile to the security policy.
• B.The administrator did not submit the configuration after configuration.
• C.The administrator did not set the time period to 9:00-18:00 daily.
• D.The shopping site does not belong to the predefined shopping site category.

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Buffer overflows, Trojan horses, and backdoor attacks are all attacks at the application layer.

• A.True
• B.False

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Which aspects of information security will be caused by unauthorized access? (multiple choice)

• A.Confidentiality
• B.Integrity
• C.Availability
• D.Recoverability

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