The layer 3 protocol must work with a layer 4 protocol in order to deliver traffic end to end.

Question

Quizplus · Accepted Answer

Layer 3 protocols, such as IP (Internet Protocol), are responsible for logical addressing and routing packets across networks. However, they need Layer 4 protocols, like TCP (Transmission Control Protocol) or UDP (User Datagram Protocol), to manage the end-to-end delivery, error checking, and flow control of those packets to ensure they reach the correct application on the destination device.

The Layer 3 Protocol Must Work with a Layer 4