Question

Match the following to one or more layers of the OSI model: I. Format and code conversion services II. Ensures reliable transmission of data III. Log-in and log-out procedures IV. Provides independence from differences in data representation

Answer 1

Answer:

How does information get passed from one layer to the next in the Internet model? At the physical layer, communication is direct between devices. ... Each layer in the sending device adds its own information to the message it receives from the layer just above it and passes the whole package to the layer just below it.

Explanation:

even though the tough data link can detect errors between hops? Additional redundancy, it's another check in case something messes up between the software and hardware. Multiple checks will help with monitoring.