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多項(xiàng)選擇題

Option 10A (back-to-back VRF) is an implementation of inter-AS MPLS VPN. Which of four statementsabout option 10A are not true?()

A.MPLS is required between the ASBRs.
B.ASBR must hold all routing information.
C.It is a scalable solution.
D.It is a simple solution.
E.MP-EBGP is used to exchange routes between ASBRs.

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