Exam 312-38 topic 1 question 238 discussion

The correct answer is C. Transport layer. The Transport layer provides communication session management between host computers. It is responsible for establishing a reliable end-to-end connection between applications running on different hosts and for ensuring that data is delivered error-free, in order, and without loss or duplication. It also handles flow control and congestion control to prevent network congestion and ensure efficient use of network resources. Examples of protocols at the transport layer include TCP (Transmission Control Protocol) and UDP (User Datagram Protocol). The Application layer (A) provides services to user applications, such as email, file transfer, and web browsing. The Internet layer (B) is responsible for routing packets across multiple networks and provides addressing and fragmentation services. The Link layer (D) provides data link communication services between nodes on the same network segment.

The Session layer (Layer 5) of the OSI model provides communication session management between host computers. This layer establishes, manages, and terminates communication sessions between two devices on the network.

Session not transportation