An architect is designing a network for an enterprise site. The design must use an active/backup design for the WAN. It must guarantee the SLA for several applications regardless of which connection…

A hybrid WAN with an internet VPN component typically operates on a best-effort basis, which cannot reliably guarantee application SLAs if it becomes the active connection.

MPLS WAN services inherently provide robust QoS mechanisms and traffic engineering capabilities, allowing service providers to guarantee specific SLAs for various applications. Using two separate ISPs for MPLS links creates a resilient active/backup design, ensuring that application SLAs are maintained even if one link or ISP fails.

Internet WAN connections are best-effort services and lack the inherent mechanisms required to guarantee specific application SLAs.

Using a single ISP for a hybrid WAN introduces a single point of failure at the ISP level, and the internet VPN component still cannot guarantee SLAs.