Netcracker Technology interview questions

Telephonic Tech. Discussion 1) Discussion on the product on which i worked on 2) technologies used in the product , different alternative technology for same requirements such as why stateless bean why not statefull beans. why in house framework rather than using JMS Q. F2F Technical discussion with 2 ppl 1) tell me about yourself? 2) security related questions from my cv such as LDAP/AD,SAML, hashing, encyp, descyp etc 3) design patterens such as Singleton, Template, 4) which design patterns can be used for producer consumer solution 5) Collections related questions such as Queue, DQ, when to use which collection? generics & collection 6) String related questions 7) why need to override hashcode method 7) what is difference between pool & cache? 8) how to traverse collection in both direction 9) java memory management 10) RDBMS normalization 11) Design UML & database tables for given problem statement 12) relationship between different objects 13) what is aggregation, composition & generalization explain with real world examples 14) which parser to use to process 4 GB file 15) XSLT & JAXB usage

questions on multithreding, collections, synchronization.