Comprehensive and Detailed Explanation From Exact Extract:
A mesh topology allows every site to connect directly to every other site, enabling the shortest and lowest-latency path between locations. This is ideal for SD-WAN deployments that must minimize latency for inter-site communication globally. In contrast, hub-and-spoke models force all traffic through a central hub, increasing latency.
Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “WAN Technologies and Topologies”:
“Mesh topologies offer direct connectivity between all participating sites, reducing latency and avoiding single points of failure. They are optimal for SD-WAN deployments requiring performance and resilience.”
Other options:
A. Star topology routes all traffic through a central node, introducing latency.
B. Spine-and-leaf is used in data center architectures, not global WANs.
D. Hub-and-spoke centralizes routing and increases latency between remote sites.
A full-mesh SD-WAN topology allows each site to establish direct overlays with every other site, minimizing the number of hops and avoiding backhauling through a central hub, thereby delivering the lowest latency paths between Asia, Europe, and the US.