Question

In the OSI network model, which layer is responsible for facilitating communication?

1) Physical layer
2) Data link layer
3) Network layer
4) Transport layer

Answer 1

The Transport layer of the OSI network model is responsible for facilitating communication by managing end-to-end data transmission reliability and flow.

Step-by-step explanation:

In the OSI network model, the layer responsible for facilitating communication is the Transport layer (option 4). This layer is crucial because it ensures that data are transferred reliably and without errors. It accomplishes this by managing end-to-end communication, segmenting data, and controlling the flow and reliability of data transmission between hosts.

The Data Link layer is responsible for node-to-node transfer, while the Network layer is in charge of routing the data packets across the network. The Physical layer deals with the physical connection and the electrical signals for communication. The cohesive functioning of all these layers ensures seamless network communication.