Given: To manage increasing enrollment and budget constraints, a school has temporarily parked classroom trailers...

Given: To manage increasing enrollment and budget constraints, a school has temporarily parked classroom trailers near the main building on its campus. Students and teachers in the trailers are using desktop computers and have an occasional need to connect to the main building's network for web browsing. The main building has an existing 802.11g Wi-Fi network.

What would be the most cost-effective and easily-deployable solution to allow the desktop computers in the temporary classrooms to access the main building's network?