单项选择题

What statement is true？（）

A.Link Control Protocol（LCP） is used for basic PPP link setup and operation
B.Link Control Protocol（LCP） is used for denying PPP connections to unauthorized devices.
C.Link Control Protocol（LCP） for PPP is synonymous to ARP for Ethernet.
D.None of the above

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单项选择题WhatCiscoIOSfeatureexaminespacketsreceivedtomakesurethatthesourceaddressandinterfaceareintheroutingtableandmatcktheinterfacethatthepacketwasreceivedon？（）

A.MPLS Traffic Engineering
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C.Authentication
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E.Unicast RPF

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A.Active
B.OpenSent
C.OpenConfirm
D.Established
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A.PPPoA
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E.AAA

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A.FEC determines how IP packets are forwarded in MPLS LSP.
B.FEC determines how to establish an LSP path.
C.FEC determines how a group of IP packets are mapped to an LSP.
D.FEC determines how MPLS labels are stacked in LSP.
E.None of above.