Big Data 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 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.

Our big data assessment is created & validated by experienced subject matter experts (SMEs) to validate big data developer skills as per industry standards. Big data skills test helps recruiters and hiring managers to assess & hire big data developers.

The big data assessment test contains questions on following topics:
 

  • Performance tuning and optimization techniques to process big data from heterogeneous sources

  • Hadoop technologies like HDFS, Hive, MapReduce

  • Relational databases and working with large data warehouses

  • Ability to handle multiple projects and prioritize tasks


Our big data skill test will make sure to assess all the required skills such as business analytics, Hadoop/Kafka/Storm/Spark/Flume, knowledge of ETL process, and exposure towards R and Python. The test will further ensure that the hiring manager gets the right fit candidate for the Big Data job. Our score reports will give a detailed analysis of each candidate and will provide the analytical data which saves the time of the recruiter.

This pre-employment test is useful for hiring:
  • Big Data Developer
  • Big Data Engineer
  • Big Data Consultant

Test details:

The big data skill assessment enables employers and recruiters to identify potential prospects 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.

The 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

20 Application Questions


Our test contains a combination of application and theory questions that help you to evaluate the application as well as practical skills of candidates.

Big Data Assessment

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’);

Candidate Name
Assessment Name
Invited by
Assessment Date
IP Address
Status








24.00 Out of 40.00
Pass
60%
03
23 Minutes

Java EE

9/10

Hibernate

3/10

Oracle PL/SQL

7/10

Analytical Thinking

5/10

Note:If score<= 30% then its a Weakness. If score >=70% then its a Strength.

Strengths

Java EE, Oracle PL/SQL, Analytical Thinking

Weaknesses

Hibernate

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