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The use of multicast addressing is expanded and simplified, and provides additional optimization for the delivery of services. Device mobility, security, and configuration aspects have been considered in the design of the protocol. IPv6 addresses are represented as eight groups of four hexadecimal digits each, separated by colons.
The Internet (or internet) [a] is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) [b] to communicate between networks and devices.
Internet history timeline: Early research and development: 1960–4 (): RAND networking concepts developed; 1962–4 (): ARPA networking ideas; 1965 (): NPL network concepts conceived