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

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

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Regarding the description of the packet in the iptables transmission process, which of the following option is wrong?

• A.If the destination address of the packet is not local, the system sends the packet to the OUTPUT chain.
• B.If the destination address of the packet is local, the packet will be sent to the INPUT chain.
• C.When a packet enters the network card, it first matches the PREROUTING chain.
• D.If the destination address of the packet is not local, the system sends the packet to the FORWARD chain.

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Which of the followingare malicious programs? (Multiple choice)

• A.Virus
• B.Worm
• C.Trojan horse
• D.Vulnerabilities

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Electronic evidence preservation is directly related to the legal effect of evidence, in line with the preservation of legal procedures, and its authenticity and reliability are guaranteed. Which of the following is not an evidence preservation technology?

• A.Encryption technology
• B.Message tag tracking technology
• C.Digital certificate technology
• D.Digital signature technology

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Which of the following are the versions of the SNMP protocol? (Multiple choice)

• A.SNMPv3
• B.SNMPv2c
• C.SNMPv2b
• D.SNMPv1

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