French & Spanish
Through mostly informal means, I have learned a lot about TCP/IP (which I know is a protocol rather than a language as here classified. My experience with TCP/IP routing has come from configuring several small networks to use incoming broadband connections. I have worked with routers from Linksys, Netgear, Netopia, and Efficient Networks. I do not bill myself as an expert in routing, but I am able to manage the basics of routing tables, NAT, DHCP, configuring PCs, and so forth.