What are typical MEF SD-WAN service attributes?

• A. Underlay type, overlay topology, number of sites, security profile, QoS policy, SLA targets, encryption settings, and tenant isolation
• B. QoS policy, SLA targets, encryption settings, and tenant isolation
• C. Underlay type, overlay topology, number of sites, security profile
• D. Device vendor, firmware version, IP address range, and warranty

Answer: (A)

MEF SD-WAN service attributes define what the provider delivers in terms of network architecture, scale, security, and performance guarantees. The best answer includes architectural choices (underlay type and overlay topology) that describe how the transport is built and how virtual networks are arranged, along with the scale (number of sites). It also covers policy and security aspects (security profile and encryption settings, plus tenant isolation) and performance commitments (QoS policy and SLA targets). Together, these elements give a complete view of the service as experienced by the customer. Other choices miss important parts—focusing only on a subset of attributes or on device-level details rather than the actual service characteristics.