Which of the following layers of the OSI model controls the data flow and troubleshoots any problems with transmitting or receiving datagrams?

A) Session

B) Transport

C) Application

D) Presentation

B) Transport

The Transport layer controls the data flow and troubleshoots any problems with transmitting or receiving datagrams. It consists of both connection-oriented and connection-less protocols providing communications between devices on a computer network. Packet filtering routers, multi-layer switches, and firewalls work at this layer.

The Session layer establishes and controls data communication between applications operating on two different computers, regulating when each computer can send data and how much it can send.