My answer to that question was built into my response. A router and probably a switch in the house and an access point ("range extender") in the outbuilding. If you have multiple wired devices in the garage, you might need to add a switch. When you get industrious, you can replace the wireless connection with fiber for relatively cheap.
I see little point in using enterprise grade equipment in a single family residence. It is like bringing your work home.
Ahh. I see. But it's all consumer grade stuff. The only thing that improves tweakability is using dd-wrt firmware.
In my final mods here which returns a speedtest.net speed of 35-15 down/up in the garage on a 2.4 client bridge. I'm happy.
All on the same subnet. So I can play all of my media without a hitch and see all of my indoor toys. I've added an AP in the garage for wireless devices. Again, with a repurposed wrt54gs router running....you guessed it. DD-WRT. I retired the ATT 2wire dsl modem used in bridge mode for an AP. She was a good one though!
So my final map is:
Cable modem>Asus router> wired devices and wifi 2.4/5GHz>cat 5 to AP. There is a gigabit switch in the mix too. We have a lot of stuff.
AP is at the end of the house in the cellar way facing the garage (they call it a barn up here...it's big) quite a distance away.
Beam from it is concentrated with an old DN dish to the barn.
Client bridge in the barn is radio only. Looking towards the cellar way. 2.4GHz for range and signal. Wired devices (Linux PC, surveilance camera, remote controlled thermostat) are plugged in the back of the client bridge router.
And 1 port on the bridge goes to the AP.
Fiber would be awesome. Cat cable too. If there weren't so many boulders out there under the dirt. And frost would shear direct burial unless down 4ft. Nah. lol!
Bringing work home means you really enjoy your job and career. Sharing talents with others means you aren't afraid of losing it.