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初级工程师
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Which three statements about AToM are true?(Choose three)" W1 n! i/ L& f1 H! H8 d
A. The PE routers must share the same VC identifier . I3 Y1 A- s3 O/ F, z$ `
B. It requires Layer 3 routing between the PE and CE router / Y d8 p/ C% F8 t
C. It requires MPLS between the PE routers " e/ S& q0 Z7 {' f0 A ^
D. IP CEF should be disabled on the PE routers
5 Y5 R2 N2 T6 d8 U& W+ ]% yE. It supports interworking for Frame Relay,PPP,and Ethernet,but not ATM ) I! k) B3 K0 v3 i4 D9 R; Z2 L6 y7 Z+ j
F. The attachment circuit is configured with the xconnect comman
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+ R7 N3 n2 y9 |0 z$ w请问这道题该怎么选,确定项A,C,争议项在E/F。- ]6 d$ Q4 U2 Y7 y6 e
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