What is the primary protocol suite responsible for message transmission on the Internet?
The Internet Protocol (IP) is a protocol used for communicating
data across a packet-switched internetwork using the Internet
Protocol Suite, also referred to as TCP/IP. IP is the primary
protocol in the Internet Layer of the Internet Protocol Suite and
has the task of delivering distinguished protocol datagrams
(packets) from the source host to the destination host solely based
on their addresses. For this purpose the Internet Protocol defines
addressing methods and structures for datagram encapsulation. The
first major version of addressing structure, now referred to as
Internet Protocol Version 4 (IPv4) is still the dominant protocol
of the Internet, although the successor, Internet Protocol Version
6 (IPv6) is being deployed actively worldwide.