@rjpsarath2 Please read carefully the section below on same page:  What external websites will I have access to while taking the exam? The exam gateway has a firewall that restricts your access to external resources. You will have whitelisted access to the Apache and Cloudera websites. Other sites we determineto be necessary and appropriate for a given exam may also be made available. Websites like Google, StackOverflow etc. and other search functionality will not be accessible. Downloading external code or packages is not permitted. Where Apache and Cloudera websites means below Websites:  Apache: https://hadoop.apache.org/docs/stable/ Cloudera: https://docs.cloudera.com/documentation/index.html   Regarding the tools, as far as I know during the exams you have been given a environment where you have to perform the task so you can use any commands available in that OS or related with environment.  If you are expecting using a tool out side of exam window then it's not. As the exam guide clearly saying:    You may not launch any other application on your computer during the exam You may not take screenshots of the exam environment   Hope this help. Let me know if you still have any question.  ... View more