Your question is Logout All React Tabs. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You have Facebook open in multiple tabs; after logging out from one tab, make sure all other tabs are logged out. How would you do that in React?
Asked in the Technical 2 stage.
Explain the browser communication mechanism, React integration, session invalidation behavior, fallback handling, and how you would test correctness across tabs, refreshes, and inactive pages.