# Which of these is true about deployment descriptors. Select the one correct answer.
1. The order of elements in deployment descriptor is not important. The elements can follow any order.
2. The elements of deployment descriptor are case insensitive.
3. The servlet-mapping element, if defined, must be included within the servlet element.
4. The web-app element must include the servlet element.
the correct answer is a.
But if I put your servlet mapping before your servlet tag, my tomcat refuses to deploy.