What is the specification reffered for the exam Java EE 6 Web Component Developer Certified Expert Exam:http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=5001&get_params=p_exam_id:1Z0-899&p_org_id=&lang=.It is not mentioned in the link given above
This certification is geared toward experienced developers of Java technology applications. Certified individuals should have the knowledge and skills to quickly build web applications suited to any Java EE 6 application server using JSP and servlet technologies....
The exam is based on the Java EE 6 specification. For the individual API/JSR specifications, check out this page: