17.4. Event Handling Models

Try these first

1. 1.

   What is the Polling Model?

   Hint

   Think about how often it checks for events.

2. 2.

   Define a Callback in programming.

   Hint

   It's like a function that gets 'called back' later.

3. 3.

   What does the Polling Model do?

   • Checks events continuously
   • Waits for user input
   • Responds to events asynchronously

   Hint

   Remember its operational principle.

4. 4.

   True or False: The Interrupt/Callback Model is a synchronous approach.

   • True
   • False

   Hint

   Think about how it handles user interactions.

5. 5.

   In a web application, you have a button that fetches data from a server when clicked. Discuss how the Interrupt/Callback Model would be implemented to enhance user experience.

   Hint

   Think about how loading indicators might be used.

6. 6.

   Analyze a scenario where the Polling Model could lead to performance issues in an application and suggest an alternative approach.

   Hint

   Consider the implications of checking too frequently.