Which statement best describes policy-based routing in MEF SD-WAN?

• A. Policies determine traffic treatment by application, user, source/destination, and time context to influence routing, QoS, and security.
• B. Policies are only used for firewall rules and have no effect on routing.
• C. Policies are optional and rarely used in SD-WAN.
• D. Policies apply only to management traffic.

Answer: (A)

Policy-based routing in MEF SD-WAN means you define rules that classify traffic by attributes such as application, user identity, source/destination, and time, and then use those rules to decide how that traffic is routed, prioritized, and secured. These policies directly drive which path a flow takes across available transports (like MPLS, Internet, or cellular), how QoS is applied (priority, bandwidth guarantees, or shaping), and what security services are enacted (firewalling, encryption, or micro-segmentation). This allows the network to meet specific SLAs and adapt to changing conditions by steering different traffic in different ways based on the defined criteria. The other statements don’t fit because policies are not limited to firewall rules and do influence routing; they aren’t optional or rarely used—in MEF SD-WAN they are central to how traffic is managed; and they apply to all data traffic, not just management traffic.