Issues with providing only a username, or a password

From e-Learning Documentation

When using the Tests & Quizzes tool in e-Learning, and an instructor would like to use username/password authentication for an assessment:
An instructor must fill in BOTH the username and password field. Only filling in one of the two fields is not sufficient and will lead to unwanted results.

1. === If an instructor only fills in the username field, as seen below: ===

• When a student attempts to take the exam, they will see the following screen:

• Entering the username here, or leaving it blank will lead to the same error message for the student:

If an instructor only fills in the password field, as seen below:

A student will be able to access the assessment without being prompted for a username and password, as seen below