Q. Which of these is a valid HDFS file permission string? (A) rw-r--r-- (B) xyz-abc-def (C) 777 (D) rwxrwxrwx ποΈ Show Answer π¬ Discuss π Share β‘Menu β Correct Answer: (A) rw-r--r-- Explanation: HDFS uses POSIX-like permission strings such as rw-r--r--.