Interiew on IBM Technologies octobet-2010

1.what is the Diff. b/w Servlets and Jsp?
2.what are the implicit objects in jsp?
3.what is the diff. b/w Forward and Include?
4.what is the diff.b/w JspDirective[<%@JspInclude%>] tag and Jsp:include[] tag?
5.Diff. b/w Hashtable and Hashmap?
6.How many types of Ejb?
7.Which is the best performance of interface and abstract?
8.what is the JspLifecycle?