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Which TCP/IP host-to-host protocol makes every effort but cannot guarantee data delivery?


Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) are the two host-to-host protocols (UDP). TCP guarantees packet delivery via a virtual circuit and data acknowledgments, whereas UDP does not. As a result, TCP is frequently referred to as connection-oriented, whereas UDP is connectionless. IP and ICMP do not qualify as host-to-host protocols.

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