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多項(xiàng)選擇題

When you design QoS on CE for an MPLS Layer 2 VPN, which three things should be considered?()

A.Layer 2 access link QoS design
B.enterprise-to-service-provider mapping models
C.Layer 3 link access QoS design
D.service provider service level agreements
E.Layer 2 link access load balancing

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