Which of the following options will not pose a security threat to the network?

• A.Failure to update the virus database in time
• B.Open company confidential files
• C.Hacking
• D.Weak personal safety awareness

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Regarding traditional firewalls, which of the following statements are correct? (multiple choice)

• A.It cannot effectively resist the spread of viruses from the Internet to the intranet.
• B.Ability to quickly adapt to changes in threats.
• C.Unable to accurately control various applications, such as P2P, online games, etc. .
• D.Lack of effective protection against application layer threats.

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The RBL black and white list query result on the firewall is as follows:

Based on the above information, which of the following statements is correct? (Multiple choices)

• A.Mail with source address 10.17.1.0/24 will be blocked
• B.Mail with source address 10.18.1.0/24 will be released
• C.Mail with source address 10.17.1.0/24 will be released
• D.Mail with source address 10.18.1.0/24 will be blocked

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Which of the following categories of sandbox can be used by a company to detect image files, shellcode code files, and PDF files? (Multiple choices)

• A.Heavyweight sandbox (virtual execution)
• B.Web inspired sandbox
• C.PE Heuristic Sandbox
• D.PDF inspired sandbox

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

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

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