Mobile. The League of Assassins was founded by Ra's al Ghul (exactly when is unknown) to be the fang that protects the head (Batgirl #67, 2005).
Key Difference: TCP stands for transport control protocol. It is a connection oriented and reliable protocol and is used for transfer of crucial data. On the other hand, UDP stands for User Datagram Protocol. It is an unreliable and connection-less protocol which is used for services that require fast transmission of data.
Ethernet is used for wired interfaces (the most common being the RJ45 cat5 cable, but it covers many copper & fiber-optic cable types). TCP/IP are higher layer protocols that are mostly in layers 3 & 4 of the transport protocol (IP is layer 3 and TCP is layer 4, see above and the hyperlink).