Eventually, after learning any article, it is the perfect interview that helps you in securing the Job. Keeping this point in mind, we have come up with this tutorial. This unit will cover up all the important questions that have been asked very often in the interviews. Interview questions and answers for Cassandra, Aqoop, Cognos, QlikView, Cloud computing, MapReduce, Informatics, HBase, Data warehouse are covered in this unit. After completing these blogs, you will be cognizant about the questions asked in the interviews and will end up securing a good position in any of the IT giants.