Enthuware

What you mean with option 5, there is no option 5 in this question. It is an only option question and they are asking for multiple answers.

I have to guess that options 3 and 4 are correnct answers, doesn't it?

If all requests ending with .a will be handled by TestServlet, so is this answers 'Although the mapping is valid, a request to /xxx/hello.a will result in an exception.' also right?

You are right there is no option 5. But the answers and explanation are correct. Only option 3 is correct. Option 2 and 4 are incorrect because there will be no exception.

This has now been updated.

thank you for your feedback!
Paul.