An administrator is tasked with configuring a single interface on a router to support multiple broadcast domains that are carried over a connected switch. Which configuration should the administrator implement to efficiently manage this requirement?
Assign a unique physical interface on the router to each broadcast domain.
Merge all domains into one on the switch level, simplifying the router's task to managing a singular traffic flow.
Create subinterfaces on the router's interface and configure them to handle the segregated traffic streams.
Transform the router's single interface into a shared conduit for all domains without distinction.