A:AnswerThis is an Android TV .. well, tv. This means that Youtube is a preloaded app and I can't remember if Hulu is or not. Regardless, you install apps from the Google Play Store.
If you wanted to connect an Apple TV device to it via an HDMI port, you could I guess.
A:Answer7.1.2 is the Android version. The tv updated allot of stuff when I hooked to WiFi, but not sure what all updated. As far as I can tell it doesn't appear you can turn off the Chromecast.