正解:B
In a Cisco SD-WAN deployment, a centralized control policy is a set of statements that define how routing decisions are made across the network. This policy is centrally managed and distributed to the network devices (vEdges or cEdges) through the SD-WAN controllers. The centralized control policy influences the path selection for data traffic by applying rules that can prioritize, restrict, or modify traffic flows based on various criteria such as application, user, source, destination, and more. It operates on the control plane level, affecting the Overlay Management Protocol (OMP) routes that are distributed by the vSmart controllers throughout the SD-WAN fabric.
References:
* Cisco Catalyst SD-WAN Policies Configuration Guide, Cisco IOS XE Catalyst SD-WAN Release 17.x - Localized Policy [Cisco SD-WAN] - Cisco1.
* Policies Configuration Guide, Cisco IOS XE SD-WAN Releases 16.11, 16.12 - Control Policies [Cisco SD-WAN] - Cisco2.
* What is a Centralized Data Policy? | NetworkAcademy.io