Question

N which OSI layer do TCP and UDP function?
a) 1
b) 2
c) 3
d) 4

Answer 1

TCP and UDP operate at the Transport layer (layer 4) of the OSI model, with TCP providing reliable communication and UDP offering a simpler, connectionless service.

Step-by-step explanation:

TCP and UDP function at the Transport layer of the OSI model, which corresponds to layer 4. The Transport layer is responsible for the logical communication between application processes on different hosts. TCP (Transmission Control Protocol) provides a reliable, ordered, and error-checked delivery of a stream of bytes between applications running on hosts communicating over an IP network. UDP (User Datagram Protocol) uses a simpler connectionless communication model with a minimum of protocol mechanism, which provides checks for data integrity but does not guarantee delivery, order, or reliable communication.