Today i passed the SCWCD with 88%. I got lot of questions from Tag Library. Regarding preparaton i used the following material 1. Servlet & JSP specification from SUN (partial reading for JSP) 2. Java Sccurity from Java Servlet Programming by Jason Hunter. 3. Core J2EEpattern by Deepak Alur. 4. ePractice Exam Sun[TM] Certified Web Component Developer J2EE (Purchased) Tips: Front Controller (Front Component) pattern is very important. - Although it is not mentioned in objectives Behaviour of servlet container for distributable application. Designing Thread safe application, you should know what is thread safe inside the scope of service method and out side the scope of service method like Request, Response, Session, ServletContext objects. Read the Java Servlet specification very carefully. Thanks to this great forum. [ April 01, 2002: Message edited by: Sohail Nasim ] [ April 01, 2002: Message edited by: Sohail Nasim ]