As you learned In the topic of Session and Cookies.

Create a simple web application with 3 pages:

1- login 2- logout 3- content

We the user login, the app redirect the user to the "content" page and save the login status or information in the cookies. If the user closes the app and opens it; the app does not open the login; It converts the user directly to the "content" page, because of the login status or Information saved in the cookies.
If the user logout, he cannot open the "content" page directly. Important Note: use the session for login, and cookies to remember the login.