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.
The reason UDP is faster than TCP is because there is no form of flow control or error correction. The data sent over the Internet is affected by collisions, and errors will be present. Remember that UDP is only concerned with speed. This is the main reason why streaming media is not high quality.