A communications protocol is a system of digital message formats and rules for exchanging those messages in or between computing systems and in telecommunications. Protocols may involve signaling, authentication, and error detection and correction capabilities. A type of protocol is an Internet Protocol (IP).
The Internet Protocol (IP) is a network-layer (Layer 3) protocol that contains addressing information and some control information that enables packets to be routed.IP has two primary
responsibilities: providing connectionless, best-effort delivery of datagrams through an
internetwork; and providing fragmentation and reassembly of datagrams to support data links with different maximum-transmission unit (MTU) sizes.
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