Which two features are advantages of SD-WAN compared to MPLS-based connectivity? (Choose two.)

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Which two features are advantages of SD-WAN compared to MPLS-based connectivity? (Choose two.)
A . uses FEC constructs for traffic forwarding, thereby improving efficiency
B. separates infrastructure and policy
C. uses policy-based forwarding of real-time traffic with less complexity
D. unifies the WAN backbone
E. manages failures through backup links

Answer: B E