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The data URI scheme is a URI scheme that provides a way to include data in-line in web pages as if they were external resources.The Domain Name System (DNS) is a hierarchical naming system built on a distributed database for computers, services, or any resource connected to the Internet or a private network.An Internet Protocol address (IP address) is a numerical label that is assigned to any device participating in a computer network that uses the Internet Protocol for communication between its nodes.The Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve billions of users worldwide.http://thenextweb.com/shareables/2010/08/03/how-the-internet-works/pt1-2/, Check that page.