Regarding SSL VPN technology, which of the following options is wrong?

• A.SSL VPN technology can be perfectly applied to NAT traversal scenarios
• B.SSL VPN technology extends the network scope of the enterprise
• C.SSL VPN requires a dial-up client
• D.SSL VPN technology encryption only takes effect on the application layer

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Which of the following is the encryption technology used in digital envelopes?

• A.Hash algorithm
• B.Symmetric encryption algorithm
• C.Asymmetric encryption algorithm
• D.Streaming algorithm

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In the classification of the information security level protection system, which of the following levels defines the damage to the social order and the public interest if the information system is destroyed? (Multiple choice)

• A.Fourth level Structured protection
• B.Third level Security mark protection
• C.First level User-independent protection level
• D.Second level System audit protection level

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Which of the following statement about the L2TP VPN ofClient-initialized is wrong?

• A.After the remote user access to internet, can initiate L2TP tunneling request to the remote LNS directly through the client software
• B.LNS assign a private IP address for remote users
• C.LNS device receives user L2TPconnection request, can verify based on user name and password.
• D.remote users do not need to install VPN client software

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The repair of anti-virus software only needs to be able to repair some system files that were accidentally deleted when killing the virus to prevent the system from crashing

• A.False
• B.True

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