Your customer has a Big Data Appliance and an Exadata Database Machine and would like to extend security. Select two ways that security works in Big Data SQL. (Choose two.)
Correct Answer: B,E
Explanation/Reference:
Transparent Data Encryption is a great way to protect sensitive data in large-scale Exadata scenarios.
With Exadata, substantial crypto performance gains are possible.
Oracle Exadata Database Machine with Oracle Advanced Security
Oracle Advanced Security transparent data encryption (TDE) protects sensitive data such as credit card numbers and email addresses from attempts to access at the operating system level, on backup media or in database exports. No triggers, views or other costly changes to the application are required. TDE leverages performance and storage optimizations of the Oracle Exadata Database Machine, including the Smart Flash Cache and Hybrid Columnar Compression (EHCC).
References: http://www.oracle.com/us/products/database/exadata-db-machine-security-ds-401799.pdf