TCP / IP (1)
TCP/IP protocols were developed as part of the US DoD ARPANET project, started in 1969. User-transparent routing across multiple networks is performed by the IP datagram layer ; network services and applications are built upon IP, using UDP or TCP protocols.
TCP/IP is a packet-switching protocol. Information is broken up into packets, transmitted, then reassembled.
TCP/IP is a set of protocols developed to allow connect computers and share resources across a network. TCP/IP protocols were designed to transmit data in a "best effort" across a network - that is data packets were sent from source to destination with no guarantee of delivery.