@Kevin Han I don't think Hortonworks has a HDFCNA practice exam. As you can see https://br.hortonworks.com/services/training/certification/hdfcna-certification/ they do not mention anything about practice exam. You can set up a HDF environment and try to create some task to practice. Example Scenario: Getting Logs Files from a Server and split them into ERROR and WARN messages. If the log has ERROR send it to Hbase if WARN sent it to Hive. Best luck in your exam! ... View more