Powersoft Technologies interview question

How to setup cluster in weblogic, how does node manager work, difference between web server and app server, how to enable url rewriting in apache,Different types of clustering? Whats the difference between unicast and multicast and which one is preferred? Have u done performance tuning on weblogic Have u done hardening on weblogic? how to setup session replication in weblogic? what are the different types of session replication in weblogic