Big Data Online Assessment Test

Topics covered

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

  • MAQ (Multiple Answer Question)
  • MCQ (Multiple Choice Question)
  • Descriptive Question
  • White Board Simulator
  • Coding Simulator
  • Audio Question
  • Video Question
  • Case Study Question

Big Data Online Test helps Recruiters and Hiring Managers to assess the Big Data skills of an applicant before an interview. Big Data is a term where a set of data is described as a large volume of data both structured and unstructured which helps much organization to take better decisions and good strategic business moves by storing the data with proper maintenance and accuracy. The three main V's of big data are velocity, variety, and volume which helps the analyzer to gather various types of data in a proper manner. Big data Pre employment Test is specially designed to check application, practical skills of a Big Data developer – as per Industry Standards.

Big Data Assessment Test contains questions on following Topics:
 

  • HDFS

  • Map Reduce

  • Flume

  • Hive

  • Pig

  • Sqoop

  • Oozie


Big Data Online Skills Test is designed by our subject matter experts to evaluate the job skills of the applicant and their knowledge of Big Data. Using powerful reporting, you can have a detailed analysis of the test results to help you make a better hiring decision and predict the candidate’s performance.

Big Data online test contains MCQ's (Multiple Choice Questions), MAQ's (Multiple Answer Questions), Fill in the Blank, Descriptive, True or False.

This pre-employment test is useful for hiring:
  • Big data developer

  • Big data engineer
  • Big data consultant

Test details:

Big Data Developer Skills Test enables employers and recruiters to identify Big Data developer by evaluating working skills and job readiness. For this reason, the emphasis is laid upon evaluating the knowledge of applied skills gained through real work experience, rather than theoretical knowledge.

Test Details: 20 minutes 

15 Application Oriented Questions

05 Theory Questions 


The combination of Application and Theory questions helps to evaluate Technical as well as practical Skills of Candidates.

Big Data Test

Question #1 of 7

How to copy a file from local to HDFS?

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

    • 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 #2 of 7

In word count MapReduce program, why we need combiner in map reduce job? 

    • Because combiners perform local aggregation of word counts, thereby data to the combiner.

    • Because combiners perform local aggregation of word counts, thereby reducing the number of key-value pairs that need to be shuffled across the network to the reducers.

    • Because combiners perform local aggregation of word counts, thereby allowing the reducers to process input data transfer.

    • Because combiners perform local aggregation of word counts, thereby reducing the number of mappers that need to run before transferring data to the reducer.

Question #3 of 7

What is a unit of data that flows through a Flume agent?

    • Record

    • Event

    • Row

    • Log

Question #4 of 7

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;

    • (1,2)

    • (1,2)

    • Run without output

    • Syntax error

Question #5 of 7

What is a subproject in Hadoop ecosystem where data flows as extract, transform and load (ETL) processing and analysis of large datasets are done?

    • Pig

    • Hive

    • Flume

    • Oozie

Question #6 of 7

Which daemon holds metadata for the HDFS: Namespace information, block information etc.?

    • Data node

    • Name node

    • Secondary name node

    • Job tracker

Question #7 of 7

How to drop partition in Hive?

    • 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’);

SAMPLE REPORT
Candidate Name: David Messi Test Date: 28-May-2014
Test Name: Big Data Test Test Start Time: 13.30

Score: 20 Out Of 30

Percentage: 66

Result: PASS

passing score image
SECTION PERFORMANCE
Section Name FAIL PASS
Map Reduce
Score: 3/3
HDFS
Score: 2/5
Hive
Score: 2/3
Oozie
Score: 5/5
Pig
Score: 1/3
Flume
Score: 1/2
Hadoop
Score: 3/5
Sqoop
Score: 3/4
STRENGTH AND WEAKNESS
Strength Map Reduce, Oozie
Weakness HDFS, Pig, Flume
* Note: If score <= 40 then its a Weakness. If score >= 80 then its a Strength.
ONLINE PROCTORING
0%
10 20 30 40 50 60 70 80 90 100%
Tolerable Limit Not acceptable
Window Violation: 0 | Time Violation: 0 secs
CANDIDATE DETAILS
Gender : Male Phone Number : +1-541-754-3010
Total Experience (Years) : 3 Total Experience (Months) : 5
Skill Set : Map Reduce, Oozie Current Employer : Interview Mocha
Current Job Title : Solution Architect Current Salary : 600.00
Expected Salary : 1000000.00 Current Location : Chicago

Sign up for a free trial today

Get your free trial and test up to 10 candidates. No strings attached. No credit card required.

SIGN UP FOR FREE

Schedule a Demo

How Interview Mocha works?

  • Add this test to your account

  • Invite candidates to take this test online

  • Candidates take the test

  • View and share actionable test reports

Trusted by leading brands worldwide

  • altran
  • credit suisse
  • sephora
  • nielsen
  • capgemini
  • hexaware
Why hiring managers and recruiters across the globe love Interview Mocha
  • Largest number of ready pre-employment skill tests
  • Relevant test compositions and quality questions designed by Subject Matter Experts (IM SME)
  • Fastest custom test creation DNA
  • World’s most super easy skill assessment platform
  • High level of platform security implementation
  • Friendly and quick customer support
  • Ready to listen and implement your feedback, we are all ears
  • Affordable pricing

Sign up for a free trial today

Get your free trial and test up to 10 candidates. No strings attached. No credit card required.

SIGN UP FOR FREE

Schedule a Demo