I am new to this community. My handle is IFLS. If you are new to the Internet seeking seeking a friend that has been around the Internet track a few times since 1996 and willing to share helpful information with you.
I am not a know-it-all (by no means) but you are welcome to test my knowledge with with your questions.
The Internet is a global system of interconnected computer networks that interchange data by packet switching using the standardized Internet Protocol Suite (TCP/IP). It is a "network of networks" that consists of millions of private and public, academic, business, and government networks of local to global scope that are linked by copper wires, fiber-optic cables, wireless connections, and other technologies.
The Internet carries various information resources and services, such as electronic mail, online chat, file transfer and file sharing, online gaming, and the inter-linked hypertext documents and other resources of the World Wide Web (WWW).
As far as your question about pinging your hub, I suggest that you go to the forums and ask that question to the ones that host your hubs for the best answer. Hope this was helpful.