21.
What is the role of the Hadoop Security Manager in a Hadoop cluster?

22.
How can Hadoop mitigate the risk of a Man-in-the-Middle (MITM) attack during data transmission?

23.
What is the significance of Hadoop's Secure DataNode Communication in HDFS security?

24.
How does Hadoop's HDFS Access Control Lists (ACLs) differ from traditional Unix file permissions?

25.
What is the purpose of Hadoop's Ranger KMS (Key Management Service) in a Hadoop security setup?

26.
How can you secure the data stored in HDFS from unauthorized access?

27.
What is the role of Hadoop's Authentication Proxy in a secure Hadoop environment?

28.
How does Hadoop's Knox Gateway enhance security in a Hadoop cluster?

29.
What is the purpose of Hadoop's HDFS Encryption Zones in terms of data security?

30.
How can Hadoop's audit logging be useful in a security context?