Which of the following security threats is an application security threat?

• A.network intrusion
• B.User identity is not authenticated
• C.Viruses, Trojans
• D.Man-in-the-middle attack

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aboutNATAddress translation, which of the following statements is false?

• A.sourceNATconfiguration in technologyNATaddress pool, you can configure only one address poolIPaddress
• B.Some application layer protocols carry in the dataIPaddress information, make themNATWhen modifying the data in the upper layerIPAddress information
• C.Address translation can be provided in the local area network according to the needs of usersFTP,WWW,Telnetand other services
• D.for someTCP,UDPagreement (such asICMP,PPTP), cannot doNATconvert

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"Implementing security monitoring management for information and information systems, preventing illegal use of information and information systems", is to achieve which feature in information security?

• A.Confidentiality
• B.Non-repudiation
• C.Integrity
• D.Controllability

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The goal of ( ) is to provide a rapid, composed and effective response in emergency situations. Thereby enhancing the ability of a business to recover immediately from a disruptive event. (fill in the blank)

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Which of the following options VPN technology supports to encrypt data messages? (Multiple choice)

• A.L2TP VPN
• B.GRE VPN
• C.IPSec VPN
• D.SSL VPN

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