Which descriptions about viruses and Trojans are correct? (Multiple Choice)

• A.Virus can self-replicate
• B.Viruses are triggered by computer users
• C.Trojans can self-replicate
• D.Trojans triggered by computer users

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Which of the following descriptions about the black and white lists in spam filtering is wrong?

• A.Set local blacklist and whitelist: Both blacklist and whitelist can be configured at the same time, or only one of them can be configured.
• B.Enter the IP address and mask of the SMITP Server to be added to the blacklist in the "Blacklist" text box, you can enter multiple IP addresses, one IP Address one line.
• C.In the "Whitelist" text box, enter the P address and mask of the SMTP Server to be added to the whitelist. You can enter multiple IP addresses, one IP address Address one line. v
• D.The priority of the blacklist is higher than that of the whitelist.

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Which of the following options are common behavioral characteristics of viruses? (multiple choices)

• A.Self-hidden features
• B.Download and backdoor features
• C.Information collection characteristics
• D.Network attack characteristics

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Regarding firewall and IDS, which of the following statements is correct?

• A.The firewall is a bypass device, used for fine-grained detection
• B.IDS is a straight line equipment and cannot be used for in-depth inspection
• C.The firewall cannot detect malicious operations or misoperations by insiders
• D.IDS cannot be linked with firewall

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IPS can't detect which of the following threats?

• A.Spam
• B.DoS
• C.Virus
• D.Worm

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