If the data link layer can detect errors between hops, why do you think we need another checking mechanism at the transport layer?

List the responsibilities of Transport Layer and Network Layer in the Internet Model.

How does information get passed from one layer to the next in the Internet model?

How do the layers of the Internet Model correlate to the layers of the OSI Model?

 If the data link layer can detect errors between hops, why do you think we need another checking mechanism at the transport layer in the OSI Model? What is a socket address? Compare TCP and UDP protocols.

 If the data link layer can detect errors between hops, why do you think we need another checking mechanism at the transport layer in OSI model?

Explain the responsibilities of the session and transport layer in the Internet model?