I've been using an AirPort Express 802.11n as my wifi router. I wanted to extend my network to another part of my house and someone recently gave me an Airport Extreme 802.11n. It was easy to set up, extending the Express signal, and it seems to be working.
However it got me wondering if I have it backwards: should the Extreme be the primary base station with the connection to my cable modem?
Also, while I am here, can I use the Airport Extreme 802.11n with Time Machine? There are conflicting reports online.
(I know this is old tech but I am on a tight budget and these hand-me-downs still work well enough for me)