| Progress Quiz
We've covered a lot of ground! Let's take a moment for a review question. What's an important advantage of using servlets?

| Servlets provide secure connections to the back-tier with more control than previous applications and may use native security features.
| It's easier to build sophisticated applications in a minimal amount of time.
| Servlets execute and remain in memory. Since they incur load overhead only once, system performance is better.
| Use of servlets permits exploiting the Java component model, JavaBeans.
| All of the above.