How Internet's connection oriented service provides reliable transport?

The internet's connection-oriented service, primarily implemented through the Transmission Control Protocol (TCP), provides reliable transport by establishing a connection between sender and receiver before data transmission. It ensures data integrity through mechanisms like error checking, retransmission of lost packets, and in-order delivery, which guarantees that all data arrives correctly and in the sequence it was sent. Additionally, TCP uses flow control and congestion control techniques to manage data transmission rates, preventing network overload and further enhancing reliability.