Hadoop Administrator (Cloudera) Interview Questions-19

Question-91: Is CDH support IPV6 Protocol?

Answer:  no, CDH require ipv4 protocol.  and you should disable the IPV6 Protocol

 

Question-92: Why Cloudera manager agent runs using root user?

Answer: Cloudera manager agent runs as a root user so that it can make sure that the required directories are created and that processes and files are owned by the appropriate user for example hdfs and mapred user. 

 

Question-93:  is it true that firewall should be disabled  to install CDH cluster?

Answer: yes, Firewalls such as iptables and firewalld must be disabled or configured to allow access to ports used by Cloudera Manager, CDH or other services. 

 

Question-94: In CDH cluster at what all are the levels within the hadoop data at rest should be encrypted?

Answer:  data at rest encryption protection can be applied at a number of levels within the Hadoop as below

  • OS Filesystem level
  • Network Level
  • HDFS level

 

Question-95: Using Cloudera manager with various Browser should we enable cookies or JavaScript?

Answer: Yes, Cookies and JavaScript must be enabled.

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Category: Hadoop Administrator