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初级工程师
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Which three statements about AToM are true?(Choose three). h" h; U8 w- L' N V+ ?
A. The PE routers must share the same VC identifier
5 ?* l8 P- j7 k9 KB. It requires Layer 3 routing between the PE and CE router
5 s8 Y( x$ E' W2 @) V) h; U' vC. It requires MPLS between the PE routers
; l$ ?, a% Z+ n1 N- [D. IP CEF should be disabled on the PE routers
. T4 }' y4 h/ |' u; m, m" [2 rE. It supports interworking for Frame Relay,PPP,and Ethernet,but not ATM
9 c% z0 d. F! OF. The attachment circuit is configured with the xconnect comman
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; r$ I+ ]4 {1 u( \! A4 M! e请问这道题该怎么选,确定项A,C,争议项在E/F。4 l f# R. `' g+ D/ Z, A
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