The Transport layer on the recipient machine requests a retr

The Transport layer on the recipient machine requests a retransmission of a segment from the sending machine. This is an example of:

A. Same-layer interaction

B. Adjacent-layer interaction

C. Cross-layer interaction

D. Split-layer interaction

Solution

A is correct. A layer on one machine communicating directly with the same layer on a distant machine is known as same-layer interaction.

B, C, and D are incorrect. B is incorrect because this interaction type involves a layer interacting with a layer directly above or below it in the same stack. C and D are incorrect because they do not exist.