31.
What is the purpose of Hadoop's Secure DataNode?

32.
How does Hadoop's Ranger support security in Hadoop clusters?

33.
What is the primary function of Hadoop's Audit Logging?

34.
How can you secure the communication between nodes in a Hadoop cluster using SASL?

35.
What is the purpose of Hadoop's HDFS Trash feature in a security context?

36.
How does Hadoop's HDFS Federation contribute to security in a Hadoop cluster?

37.
What role does the Hadoop CredentialProvider API play in securing Hadoop credentials?

38.
How can you secure Hadoop's JobHistory Server?

39.
What is the significance of Hadoop's Authentication Proxy in a secure Hadoop environment?

40.
How does Hadoop's HDFS Trash feature contribute to security?