Option D is correct. Another well-liked Layer 4 protocol is UDP. UDP is used by several protocols, including DNS, TFTP, and others, to transmit data.
A connectionless protocol is UDP. Before you transmit data, there is no need to create a link between the source and destination. At the transport level, TCP is by far the most widely used protocol when combined with IP. On networks like Novell or Microsoft, the IPX protocol is used at the network layer, and SPX is paired with it at the transport layer. TCP is used to manage network congestion, segment size, data exchange rates, and flow management. Where error correcting capabilities are needed at the network interface level, TCP is chosen.
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