17.4.1. Polling Model

Try these first

1. 1.

   What is the Polling Model?

   Hint

   Think about how often the program looks for changes.

2. 2.

   What is a key disadvantage of the Polling Model?

   Hint

   Consider what might happen if the program is always busy checking.

3. 3.

   What is a Polling Model?

   • A method of asynchronous event handling
   • A technique for continuously checking for events
   • An obsolete programming model

   Hint

   It relates to how programs check for occurrences.

4. 4.

   True or False: The Polling Model is efficient for modern applications.

   • True
   • False

   Hint

   Think about how often polling checks for events.

5. 5.

   Given a scenario where user interaction is minimal, suggest whether to use polling or a callback system. Justify your answer.

   Hint

   Consider how often events really occur.

6. 6.

   Analyze how switching from a polling system to an event-driven callback system would impact overall application performance. What metrics would you look at?

   Hint

   Think about the user experience in general.