Is this a network

[foreright]

My son has asked me to go rouund his place and set up his TV/Mac with a Plex media player. He has a Samsung TV from which I can download the app. (hopefully)
At the moment he uses a Sky WiFi router to connect to the internet for his Mac (in his spare bedroom/office). He also uses a WiFi dongle on his TV which he used for LoveFilms. So it is asumed he has the capability of communicating with hisTV-Mac as well.
My question is: Because both the TV and Mac can gain access to the internet, is it the wrong assumption that both the TV and Mac can commincate with each other. Or is it not yet a network till something is set up to constitute one.
As you can see a layman is asking a novice (me) to set it up and I am having to ask -you - the experts for advice. Cheers.

 

[asim18]

Yes. That is a network. The Mac and the TV are both connected with the Sky router so they're both networked, and yes they can technically communicate with each other.

The router automatically gives each device connected to it a unique ID number called an "IP address". This is what lets each device communicate with each other.

When you launch the Plex app on the TV or Mac it will search for any Plex servers on the network, and it should be able to pick up the Mac/Plex box.