Clock
Test duration:
40
min
Notes
No. of questions:
20
Tie
Level of experience:
Entry Level/Mid/Senior

ETL Assessments

ETL assessments are the ideal pre-employment assessment for recruiters & hiring managers to assess the ETL skills of candidates before an interview. The ETL assessment test helps hire for the positions of ETL Developers and Analysts. This assessment has helped customers reduce their hiring costs and time-to-hire by 40%.

15786
+
Candidates
Assessed
186
+
Organizations Served
Fujitsu
Paypal
Capgemini
Deloitte
Coupa
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Vanguard
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About

ETL Assessments for ETL Developer

ETL (Extract, Transform, & Load) is the process performed in the data warehouse. It involves the extraction of data from multiple data sources (relational database), a transformation of data into a suitable format & then loading the transformed data into the destination system (another database, file, data warehouse).

An ETL developer is responsible for implementing the ETL process effectively to gather data warehouse information from unstructured data. It is then used by business users & senior authorities to form critical business decisions.

ETL assessments help tech recruiters and hiring managers to gauge developers' database engineering skills before hiring/recruiting. The ETL assessment test is designed & validated by experienced Subject Matter Experts (SME) to assess and hire ETL developers as per industry standards.

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How it works

Test Summary

Our intelligent reports on the ETL skill assessment test provides a detailed analysis of skills-related strengths & weaknesses of the candidates to facilitate better hiring decisions.

The ETL skills assessment test may contain MCQs (Multiple Choice Questions), MAQs (Multiple Answer Questions), Fill in the Blanks, Descriptive, Whiteboard Questions, Audio / Video Questions, AI-LogicBox (AI-based Pseudo-Coding Platform), Coding Simulations, True or False Questions, etc.

Test Duration
40
No. of Questions
20
Level of Expertise
Entry Level/Mid/Senior
Useful for hiring
  • ETL Data warehouse Application Developer
  • ETL Developer
  • ETL Analyst
Topics Covered
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Data Reduction

iMocha’s ETL assessment test evaluates a candidate’s ability to use a data reduction process to reduce specific aspects of data and represent it in a smaller volume.

DataStage Functions

This test evaluates the candidate’s working ability with different functions used in DataStage.
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Database Lifecycle

This test helps recruiters and hiring managers assess a candidate’s understanding of the database lifecycle management system to trace the history of the database and make records in a system.
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Data Warehouse

This test evaluates a candidate’s understanding of data warehousing to store information securely for a business.
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Data Stage

This test evaluates the candidate’s understanding of data warehousing to store information securely for a business.
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Data Objects DataStage Engine

Our test evaluates the candidate’s knowledge of the DataStage tool to extract, transform, and load data from the source to the destination.
Sample Question
Choose from our 100,000+ questions library or add your own questions to make powerful custom tests.

Question types :

Multiple Option

Topic:

Difficulty:

Hard


Q 1. You have been asked to train « Naive Bayes model for spam detection dataset

Using Python command, what wil you add in the given code at XXXX to deciore, it and train your modal for the given dataset?

import numpy os np

X= nporroyll 3. 2b[1 21 [2.21.[3,21)
Y= nporray(fi.a,a.1))

XXXX

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

Question types :

Multiple Option

Topic:

Machine teaming

Difficulty:

Hard


Q 1. Q2 Lets assume that you have 6 Pandas DataFrome(af) in the below tole.

Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074

When the following commend is executed, what hoppens to the DatoFrome?

df= defiinat()
Y= nporray(fi.a,a.1))

Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074
Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074
it gives an error becouse of the third row which has on empty string.
None of these

Question types :

Multiple Option

Topic:

Difficulty:

Easy

Question:

Which of the following is true for three-tier data warehouses?


Options

  • Once created, the data marts will keep on being updated from the data warehouse at periodic times.
  • Once created, the data marts will directly receive their new data from the operational databases.
  • The data marts are different groups of tables in the data warehouse.
  • A data mart becomes a data warehouse when it reaches a critical size.
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questions to the test

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FAQ
What is Data Science?
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What are the key skills that recruiter should look for while hiring a Data Scientist?
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