Considering the situation described above, the TCP/IP model layer that is at work that requires you to log on to the Web site is known as the "Application layer."
The application layer, otherwise known as the abstraction layer, is defined in the Internet Protocol Suite (TCP/IP) and the OSI model.
Also, the application layer determines the shared communications procedures and interface modes utilized by the hosts in a communications network.
Some of the common examples of application layer include the following:
Hence, in this case, it is concluded that the correct answer is "Application layer."
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