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Which of the following protocols is connectionless and provides low overhead and high speed?
SCTP
IPX
TCP
UDP
User Datagram Protocol (UDP) is a connectionless protocol that is built for speed. It has low overhead and often sends data in small blocks, such as 512 bytes, and its header 8 bytes long. The fields in the header include source port, target port, message length, and checksum.
Transmission Control Protocol (TCP) is considered a connection-oriented protocol because it provides for startup, shutdown, flow control, and acknowledgements. It is covered in detail in RFC 793.
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