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HDFS Skills Test
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Level of experience:
Entry Level/Mid/Expert

HDFS Skills Test

This skills Test assists recruiters and L&D managers in making skills-first talent decisions. Leverage it to understand individuals' knowledge like ETL tools, Data ingestion tools, Hadoop, and more. It can even significantly reduce the hiring time by 40%, and conduct training needs analysis for the workforce.

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What is HDFS?

Hadoop Distributed File System is a system that handles extensive data sets running on a hardware community. It uses a robust Data Replication mechanism to provide reliable storage for data. It has a huge error tolerance providing native datasets support, resulting in better throughput than conventional file systems.

Why use iMocha?

iMocha is one of the most preferred skill assessments that offers a unique set of questions with each test. Additionally, iMocha's powerful reporting helps recruiters and L&D managers analyze the section-wise performance of individuals to gauge their strengths and weaknesses accurately.

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How it works

Test Summary

This test assesses the following skills of individuals:

  • Knowledge of Hadoop and its components, such as HBase, Hive, Pig, Sqoop, Oozie, etc.
  • Writing Hadoop programming languages, including Java, Python, Scala, etc.
  • Understanding of distributed computing
  • Hands-on experience in Hadoop tools and technologies, Apache Hive, Pig, HBase, etc.
  • Incorporating the MapReduce programming framework
  • Ability to perform data processing and analysis
  • Understanding of cluster optimization and performance tuning
  • Experience in Hadoop data security mechanisms such as encryption, authentication, and authorization

Additionally, the powerful report feature of this test is presented in a well-organized and easy-to-read overview format.

Useful for hiring
  • Big data processing
  • Data analytics
  • Data warehousing
  • Data archiving
  • Log processing
  • Distributed file storage
Test Duration
No. of Questions
Level of Expertise
Entry Level/Mid/Expert
Topics Covered





Sample Question
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Test Report
You can customize this test by

Setting the difficulty level of the test

Choose easy, medium, or tricky questions from our skill libraries to assess candidates of different experience levels.

Combining multiple skills into one test

Add multiple skills in a single test to create an effective assessment and assess multiple skills together.

Adding your own
questions to the test

Add, edit, or bulk upload your coding, MCQ, and whiteboard questions.

Requesting a tailor-made test

Receive a tailored assessment created by our subject matter experts to ensure adequate screening.
How is this skill test customized?
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iMocha's Skills test can be customized in many ways. You can adjust the difficulty level of the questions to match the skill level of the individuals. You can also customize it by adding specific questions related to programming language, Hadoop components, tools & technologies, data security, or any other related topic.

What are the most common interview questions related to HDFS?
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Here are the most frequently asked questions during the interview:

  • Elaborate on the different Hadoop configuration files.
  • Can you differentiate between regular FileSystem and HDFS?
  • Can you explain fault tolerance?
  • Can you name two metadata that a NameNode server holds?
  • How would you copy data from the local system onto HDFS?

If you want a more custom set of questions, iMocha can help!

What are the required skillsets to work on HDFS?
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Here is the list of technical and non-technical required to excel in this field:



  • Hadoop Fundamental units
  • Machine learning tools
  • Cluster computing tools
  • ETL tools
  • Data ingestion tools
  • Hadoop Programming languages
  • MapReduce
  • Zookeeper



  • Critical thinking
  • Problem-solving skills
  • Adaptability and learning skills
  • Problem communication and documentation
  • Project management