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初级工程师
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Which three statements about AToM are true?(Choose three)
% b1 w3 b' i4 G7 {' r& i7 R+ v+ m% R' wA. The PE routers must share the same VC identifier
( O. t/ k. I# L: e+ C6 s$ O( q0 i! MB. It requires Layer 3 routing between the PE and CE router
0 T' X& ?/ ?& r( U0 d) p6 oC. It requires MPLS between the PE routers * s! u3 w7 D# C/ M% X
D. IP CEF should be disabled on the PE routers
# F0 n7 z" {) pE. It supports interworking for Frame Relay,PPP,and Ethernet,but not ATM
; ?; B( S+ I6 P6 e: w$ D$ kF. The attachment circuit is configured with the xconnect comman& [1 T% |0 S/ o( x' N/ ~
, r7 B( Y& N1 a" _* W" j5 V请问这道题该怎么选,确定项A,C,争议项在E/F。
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