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初级工程师
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Which three statements about AToM are true?(Choose three)+ w* |" i" K) s6 h
A. The PE routers must share the same VC identifier
$ t& V% C! T7 ^# \2 U* QB. It requires Layer 3 routing between the PE and CE router 1 p# u6 ?1 j% v9 ~' a6 J' f* o' |! G
C. It requires MPLS between the PE routers # Y b n+ Q% _
D. IP CEF should be disabled on the PE routers
* ^7 D, ?- i# K; i$ sE. It supports interworking for Frame Relay,PPP,and Ethernet,but not ATM
9 F2 |+ v# E, z y$ \; Q! d, ^F. The attachment circuit is configured with the xconnect comman
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请问这道题该怎么选,确定项A,C,争议项在E/F。& k! [2 ?/ Q4 i/ [- e6 I# Q9 `
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