Which of the following options are necessary for the firewall dual-system hot standby scenario?? (multiple choice)

• A.hrp preempt [delay interval]
• B.hrp interface interface-type interface-number
• C.hrp mirror session enable
• D.hrp enable

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aboutClient-InitializedofL2TP VPN, which of the following statements is false?

• A.remote user accessInternetAfter that, it can be directly sent to the remoteLNSinitiateL2TPtunnel connection request
• B.LNSAssign private keys to remote usersIPaddress
• C.Remote users do not need to installVPNClient software
• D.;NSThe device receives the userL2TPConnection request, the user can be authenticated according to the user name and password

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As shown in the figure, a TCP connection is established between client A and server B.
Which of the following should be the serial number of the "?" message in the two places in the figure?

• A.a+1:a
• B.b+1:b
• C.a+1:a+1
• D.a:a+1

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aboutL2TP VPNstatement, which of the following is false?

• A.Data will not be encrypted
• B.belonging to the third floorVPNTechnology
• C.WithIPsec VPNIn conjunction with
• D.It is suitable for employees on business to dial up to access the intranet

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If the company network administrator needs to check the status of the heartbeat interface after configuring the company's dual-system hot backup, the command he needs to type is ( ) The system view has been entered by default) (fill in the blank)

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