At layer 4 of the OSI model, how is each application identified to facilitate proper routing and delivery of data? ###answer### Through the use of encryption algorithms Through the application's unique username and password By a unique port number assigned to the application By the MAC address of the destination device

Answer 1

At layer 4 of the OSI model, each application is identified to facilitate proper routing and delivery of data by a unique port number assigned to the application. Port numbers allow the transport layer to distinguish between different applications or services on the same device.