You need to configure a router that has three interfaces to route five VLANs. What is the best way to accomplish this task?

Router on a stick (ROAS) is created by configuring a trunk between the switch and the router. ROAS will receive tagged frames and route them, then send them back down the interface to the respective connected VLAN. Although you could purchase a router with additional interfaces, this would not be the most efficient method of completing the task. Configuring a dynamic routing protocol will not accomplish this task.