A user is not able to login to his e-mail account. The login attempt throws an "invalid username and password" error. Which of the following can be inferred from this?
A)Physical layer is working.
B)Application layer is not working.
C)Physical layer is not working.
D)Data link layer is not working.

Question

Quizplus · Accepted Answer

This implies that the physical layer is working.
Key Takeaway: The fact that the user is able to view an error message related to the username/password authentication shows that the physical layer is working. If the physical layer wasn't working, it would display a connection related error. However, one needs to probe further to understand where the problem lies.

A User Is Not Able to Login to His E-Mail