What service attribute defines expected performance levels in MEF SD-WAN?

• A. Security policy
• B. Tenant isolation
• C. Underlay type
• D. SLA targets

Answer: (D)

SLA targets define expected performance levels. They specify measurable metrics and thresholds—such as latency, jitter, packet loss, and throughput—that the MEF SD-WAN service should meet across the transport paths. This gives a concrete basis for monitoring, assurance, and actions if targets aren’t met. The other attributes serve different purposes: security policy governs protections, tenant isolation handles multi-tenant separation, and the underlay type describes the underlying transport, not the performance goals. For example, an SLA target might require end-to-end latency under 50 ms for 99.9% of traffic and packet loss under 0.1%, illustrating how SLA targets express expected performance.