Two manufacturing plants each have a private ExpressRoute circuit to Microsoft. They want their plant networks to exchange data directly across Microsoft's private backbone, with no internet path and no extra VPN appliances. Which feature enables this?
Show answer and explanation
Answer: A
ExpressRoute Global Reach connects two on-premises ExpressRoute circuits through Microsoft's network, so the plants can exchange traffic privately at the network layer. FastPath speeds up the data path into virtual networks rather than linking on-premises sites. ExpressRoute Direct provides dedicated port capacity, and VPN tunnels over the internet would keep the exchange off Microsoft's private path.
Why the other options are wrong
- B. FastPath reduces gateway hops for traffic reaching VMs in Azure virtual networks; it does not connect two on-premises circuits to each other.
- C. ExpressRoute Direct gives dedicated, high-bandwidth port access for a circuit owner; it adds capacity but does not join two circuits so that sites can reach each other.
- D. Internet-based VPN tunnels between the plants traverse public internet paths, which violates the requirement to keep the exchange private on Microsoft's network.