单选题Which statement describes the function of the LNS in a L2TP environment?（）A It initiates both the PPP session and the tunnel.B It initiates the PPP session and terminates the tunnel.C It terminates the PPP session and initiates the tunnel.D It terminat

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单选题

Which statement describes the function of the LNS in a L2TP environment?（）

It initiates both the PPP session and the tunnel.

It initiates the PPP session and terminates the tunnel.

It terminates the PPP session and initiates the tunnel.

It terminates the PPP session and terminates the tunnel.

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第1题

单选题The ERX Edge Router responds to a received PPP over Ethernet Active Discovery Initiation （PADI） with which message type？（）A PPPoE Active Discovery OfferB PPPoE Active Discovery InitiationC PPPoE Active Session ConfirmationD PPPoE Active Session Acknowledgment

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第2题

单选题With the following CLI command output performed on an LNS: show l2tp session L2TP session 1/2/3 is up .What is the meaning of the numeric values in the output?（）A session 1, destination 2, tunnel 3B destination 1, session 2, tunnel 3C tunnel 1, session 2, destination 3D destination 1, tunnel 2, session 3

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第3题

单选题The ERX Edge Router responds to a received PPP over Ethernet Active Discovery Initiation(PADI) with which message type?（）A PPPoE Active Discovery OfferB PPPoE Active Discovery InitiationC PPPoE Active Session ConfirmationD PPPoE Active Session Acknowledgment

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第4题

单选题In a DSL network，which device terminates the PPP over Ethernet subscriber’s two-wire phone line？（）A RASB DSLAMC ATMswitchD RADIUSserver

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第5题

单选题What is the functionality of L2TP in a BRAS environment?（）A It tunnels DHCP requests to the LNS.B It provides access for analog modem users.C It provides RFC 2547 VPN services to the user.D It tunnels a PPP session across an IP backbone.

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第6题

单选题Which configuration component is required to allow a PPP over ATM client to connect to one virtual router for a particular session and to a different virtual router for another session?（）A profileB domain mapC IP access-routeD static IP addressing

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第7题

单选题By default, which PPP mechanism does the ERX Edge Router use to monitor the session for a PPP over ATM client?（）A pingB helloC get requestD echo request

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单选题Which statement describes the function of the LNS in a L2TP environment?（）A It initiates both the PPP session and the tunnel.B It initiates the PPP session and terminates the tunnel.C It terminates the PPP session and initiates the tunnel.D It terminat

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