Why do local connections not generate network traffic?

Local connections do not generate network traffic primarily because they operate as internal processes within the same system rather than communicating over a network. When two applications or services on the same machine communicate, they can do so through inter-process communication (IPC) mechanisms such as shared memory, pipes, or sockets that are not routed through a network interface. This means that local connections are established without involving external hardware or network protocols, making them fast and efficient while leaving the network traffic untouched.

Other choices might suggest mechanisms like bypassing the network interface or using alternative protocols, but fundamentally, it’s the nature of being confined to internal processes that prevents any generation of external network traffic. Hence, the focus on internal processes highlights how communication remains within the boundaries of the local system, negating any need for external network routing or resource usage.