Which requirements are functional or non-functional?

DRAG DROP
You need to recommend methods for assigning security to each group of users.
The customer provides the following requirements:
Customers need the ability to submit a case through an online portal.
Portal must handle 75 concurrent users submitting cases.
Service data must be retained for at least six years.
You need to determine which requirements are functional or non-functional.
Which requirements are functional or non-functional? To answer, drag the appropriate types to the correct requirements. Each type may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Select and Place:

Correct Answer:

Explanation/Reference:
Explanation:
Box 1: Functional
Functional requirements describe what the solution needs to do or its behaviors.
Box 2: Non-functional
Non-functional requirements commonly describe non-behavior aspects of the solution such as performance requirements.
Box 3: Non-functional
Examples of common non-functional requirement types include:
Availability
Compliance/regulatory
Data retention/residency
Performance (response time, and so on)
Privacy
Recovery time
Security
Scalability
Reference:
https://docs.microsoft.com/en-us/learn/modules/work-with-requirements/3-functional-requirements
https://docs.microsoft.com/en-us/learn/modules/work-with-requirements/4-non-functional-requirements