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Big Data Assessment Test

Topics Covered

  • HDFS
  • Oozie
  • Map Reduce
  • Flume
  • Hive
  • Pig
  • Sqoop

Useful for hiring

  • Big Data Developer
  • Big Data Specialist
  • Big Data Expert
  • Big Data Engineer
  • Big Data Consultant

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Question

How to copy a file from local to HDFS?

Note: There can be multiple correct answers to this question.

Answer
    • hadoop fs -cp localfile /user/hadoop/file2

    • hadoop fs -copy localfile /user/hadoop/file2

    • hadoop fs -put localfile /user/hadoop/file2

    • hadoop fs -copyToLocal localfile /user/hadoop/file2

Question

Assume that we have input data file below:

1,2,3
3,1,2
5,6,3

What is the output when running this script?

A=LOAD'input1'USINGPigStorage(',') 
AS(f1:int, f2:int);
B=LOAD'input1'USINGPigStorage(',') 
AS(f1:int, f2:int);
D=UNIONB,A;
X=FILTERDBY(f1==8)OR(NOT(f1+f2>3));
dumpX;

Answer
    • (1,2)

    • (1,2)

    • Run without output

    • Syntax error

Question

How to drop partition in Hive?

Answer
    • hive> ALTER TABLE student DROP [IF EXISTS]
      > PARTITION (year=’1991’);

    • hive> Modify TABLE student DROP [IF EXISTS]
      > PARTITION (year=’1991’);

    • hive> Update TABLE student DROP [IF EXISTS]
      > PARTITION (year=’1991’);

    • hive> ALTER TABLE student REMOVE [IF EXISTS]
      > PARTITION (year=’1991’);

Test details:

Big Data skills test will evaluate a candidate’s practical knowledge and will identify whether the candidate is ready to be employed. Big Data assessment test can be taken by the candidate from anywhere in the comfort of their time zone.

Big Data skill test may contain MCQ's (Multiple Choice Questions), MAQ's (Multiple Answer Questions), Fill in the Blank, Descriptive, Whiteboard Questions, Audio / Video Questions, True or False.


Test Details: 20 minutes

10 Application Questions

Test description:

Big Data is a data set term that describes the large volume of data for a structured, semi-structured and unstructured type that has the potential to be mined for information. It includes and integrates many new types of data and data management alongside traditional data. Big Data is also defined by the 4 Vs namely - Volume, Velocity, Variety, Value. A Big Data developer is a person who must have an ability to take the ownership of all business problems and define the right solutions for them. The Big Data developer also needs to interface with the product team to gather, understand and translate requirements into the agile delivery process.
 
Big Data assessment test helps recruiters and hiring managers to assess candidate’s ability to work on Hadoop, Hive, and Pig etc. Interview Mocha’s Big Data developer assessment test is created & validated by experienced subject matter experts (SMEs) to assess & hire Big Data developer as per industry standards.

Big Data skills assessment test helps you to screen the candidates who possess traits as follows:
 

1.  Working knowledge of batch frameworks 
2.  Strong experience of working on HDFS, Hive, MapReduce, etc.
3.  Excellent in performance tuning and optimization techniques
4.  Understanding of distributed querying, horizontal sharing/data partitioning concepts
 
Interview Mocha’s Big Data skills assessment test has a unique set of questions. You can also create or ask us to create a customized test that includes questions which are specific to your job-requirement.
 
Our powerful reporting helps you to analyze section wise performance of candidate to gauge his/her strengths and weaknesses. Moreover, you can always use our candidate ranking tool to screen the best performing candidate amongst others.

Good News! You can customize this test as per your requirement

  • Choose and add questions from Interview Mocha question libraries

  • Add your own set of questions

  • Customize test settings like duration, number of questions, passing score, web proctoring and much more

  • Mail us at support@interviewmocha.com to create a custom test

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