Fire Trust domain FTP client wants to access an Untrust server FTP service has allowed the client to access the server TCP 21 port, the client in the Windows command line window can log into the FTP server, but can not download the file, what are the following solutions? (Multiple choice)

• A.the FTP works with the port mode modify the Untrust Trust domain to allow the inbound direction between the default access strategy
• B.FTP works with Passive mode modify the domain inbound direction between the Untrust Trust default access policy to allow
• C.Trust Untrust domain configuration is enabled detect ftp
• D.take the Trust between Untrust domain to allow two-way default access strategy

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Which of the following are the ways in which a PKI entity applies for a local certificate from CA? (Multiple Choice)

• A.Network application
• B.Local application
• C.Offline application
• D.Online application

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Through display ike sa to see the result as follows, which statements are correct? (Multiple choice)

• A.The first stage ike sa has been successfully established
• B.ike is using version v2
• C.The second stage ipsec sa has been successfully established
• D.ike is using version v1

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Which of the following options are suppoied by VPNtechnology to encrypt data messages? (Multiple choice)

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

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Which of the following statement about the NAT is wrong?

• A.NAT technology can effectively hide the costs of the LAN; it is an effective network security protection technology
• B.Address Translation can follow the needs of users, providing FTP, WWW, Telnet and other services outside the LAN
• C.Some application layer protocols carry IP address information in the data, but also modify the IP address information in the data of the upper layer when they are as NAT
• D.For some non-TCP, UDP protocols (such as ICMP, PPTP), unable to do the NAT translation

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