Which of the following correctly describes the Transport

Solution

The Transport Layer (Layer 4) of the OSI model is responsible for ensuring reliable data transfer between devices. It manages error checking, flow control, and, in some cases, retransmissions if packets are lost or corrupted. Protocols such as TCP (Transmission Control Protocol) operate at this layer, offering connection-oriented communication, error recovery, and segmentation of data. In contrast, UDP (User Datagram Protocol) also operates at this layer but offers connectionless communication with no guarantee of delivery. The transport layer plays a crucial role in ensuring data integrity during transmission. Why other options are wrong: a) It is responsible for the physical transmission of data between devices : This is the role of the Physical Layer (Layer 1) . b) It establishes, manages, and terminates sessions between applications : This is the role of the Session Layer (Layer 5) . d) It determines the best path for data to travel across networks : This is handled by the Network Layer (Layer 3) . e) It converts data into a format that can be understood by the application layer : This is the role of the Presentation Layer (Layer 6) .