+A **protocol stack** is a conceptual model that organizes various [network protocols](/wiki/network_protocol) into discrete [layers](/wiki/layer). Each layer handles specific communication functions, working in concert to enable seamless [data transmission](/wiki/data_transmission) across networks.
+## See also
+- [OSI Model](/wiki/osi_model)
+- [TCP/IP](/wiki/tcp_ip)
+- [Networking](/wiki/networking)
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