Question

End to end connectivity is provided from host to host in which one of the following layers?

• A. The network layer
• B. The transport layer
• C. The session layer
• D. The data link layer

Hint:

The transport layer ensures reliable data transfer between hosts, while the network layer handles the routing and forwarding of packets.

Answer 1

The Correct Option is B

- The network layer: The network layer is responsible for routing and forwarding packets across the network, but it does not provide end-to-end connectivity. It handles tasks like packet addressing, routing, and switching.
- The transport layer: The transport layer (such as TCP/UDP) provides end-to-end communication between hosts. It ensures data is properly transferred between the source and destination hosts.
- The session layer: The session layer is responsible for managing sessions or connections between applications, but it does not provide end-to-end connectivity in the network context.
- The data link layer: The data link layer is responsible for point-to-point communication within a local network segment. It ensures data transfer between adjacent network devices, but not between hosts across different networks.
Therefore, the correct answer is 2. The transport layer.