Final answer:
Apache Ranger provides two important security features: Authorization and Auditing.
Step-by-step explanation:
Apache Ranger is a security framework for Apache Hadoop. It provides various security features to ensure the confidentiality, integrity, and availability of data stored in a Hadoop cluster. Two of the security features provided by Apache Ranger are Authorization and Auditing. Authorization allows administrators to define fine-grained access control policies to restrict user access to resources within the Hadoop cluster. This helps ensure that only authorized users can access sensitive data. Auditing enables the capture and analysis of security-related events within the Hadoop cluster. It provides a detailed record of user activities, resource access attempts, and other security-related events, which can be used for compliance, troubleshooting, and forensic purposes.