Go back to 350-029 - CCIE Service Provider Written Exam

Question :-

Option 10A (back-to-back VRF) is an implementation of inter-AS MPLS VPN. Which of four statements about option 10A are not true? (Choose four.)
MPLS is required between the ASBRs.
ASBR must hold all routing information.
It is a scalable solution.
It is a simple solution.
MP-EBGP is used to exchange routes between ASBRs.

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