Information security is the protection of information and information systems to prevent unauthorized access, use, leakage, interruption, modification, damage, and to improve For confidentiality, integrity and availability. ,

• A.False
• B.True

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Which of the following options does not belong to the defense against HTTP flood attacks?

• A.Baseline learning
• B.URI source fingerprint learning function
• C.HTTP Flood Source Authentication
• D.HTTP source statistics

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Which of the following descriptions about scanning and snooping attacks is wrong?

• A.The source address of the scanning attack is real, so you can use the method of directly adding a blacklist for defense.
• B.It is usually the network detection behavior before the attacker launches a real attack.
• C.Scanning attacks include address scanning and port scanning.
• D.When a worm breaks out, it is generally accompanied by an address scan attack, so scanning attacks are aggressive.

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Which of the following is correct about worms and viruses?

• A.The worm is infected with other computer systems on the network
• B.Viruses exist independently in computer systems
• C.The virus is mainly transmitted through system loopholes
• D.The worm is parasitic

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Which of the following statements is wrong about anti-spam answerback codes?

• A.The answerback code is uniformly set as 127.0.0.1.
• B.The answerback code will be different for different RBL service providers.
• C.USG treats the mail that matches the answerback code as spam.
• D.Release the message if the answerback code does not reply to or the replied answerback code is not configured on the USG.

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