I want to use my nexus 5x to make presentations, but apparently, there is no video support. I tried an asus miracast dongle, but that is spotty at best. So it appears that my only good option is to use a chromecast device, but my university uses the 802.1x protocol, which chromecast apparently does not support. Is there a way to use a travel router to do what I want? I see two options:The router does not connect to the internet and simply allows my phone and the chromecast to communicate. I don't know if chromecast needs internet access to work.It connects to the internet using the 802.1x protocol, but then provides a different protocol (11n, etc) for my phone and the chromecast. Will either of these options work? Or some other setup? Specific hardware suggestions are of course welcome. 
How to access 802.1x network with non-802.11x device
wifi;access point