Question: In the Internet (using the TCP/IP protocol suite), a message is sent from a computer in USA to another computer in Japan. Answer the following

In the Internet (using the TCP/IP protocol suite), a message is sent from a computer in USA to another computer in Japan. Answer the following questions:

a. At which layer, names are used as identifiers (addresses)?

b. At which layer, port numbers are used as identifiers (addresses)?

This question is from a Introduction to Data Communications and Networking class I have.

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