ITC Infotech Interview Questions, Process, and Tips

Q1. What are python libraries used as a data engineer?
Ans. 
Python libraries commonly used by data engineers include Pandas, NumPy, Matplotlib, and Scikit-learn.
• Pandas: Used for data manipulation and analysis.

• NumPy: Provides support for large, multi-dimensional arrays and matrices.

• Matplotlib: Used for creating visualizations and plots.

• Scikit-learn: Offers machine learning algorithms and tools for data analysis.
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Q2. What is PySpark
Ans. 
PySpark is a Python API for Apache Spark, a powerful open-source distributed computing system.
• PySpark allows users to write Spark applications using Python programming language.

• It provides high-level APIs in Python for Spark's functionality, making it easier to work with large datasets.

• PySpark can be used for data processing, machine learning, graph processing, and more.

• Example: PySpark can be used to perform data anal...read more
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Q3. Explain about your project Architecture
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Q1. What is Delta Lake and its benefits
Ans. 
Delta Lake is an open-source storage layer that brings ACID transactions to Apache Spark and big data workloads.
• Provides ACID transactions for big data workloads

• Ensures data reliability and quality by enabling schema enforcement and data versioning

• Supports batch and streaming data processing

• Improves data quality and reliability by enabling schema enforcement and data versioning
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Q2. How will you create a end to end pipelines in Data Factory if my source and target are SQL and ASQL respectively?
Ans. 
Create end to end pipelines in Data Factory with SQL and ASQL as source and target respectively.
• Use Copy Data activity to move data from SQL source to ASQL target

• Define linked services for SQL and ASQL in Data Factory

• Create datasets for SQL and ASQL tables

• Map columns between source and target datasets

• Configure data flow activities for any transformations needed
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Simple array questions

Q1. Difference between spring jpa and hibernate
Ans. 
Spring JPA is a part of the Spring framework that provides an abstraction layer on top of JPA, while Hibernate is a standalone ORM framework.
• Spring JPA is a part of the Spring framework and provides additional features like transaction management, dependency injection, and aspect-oriented programming.

• Hibernate is a standalone ORM framework that provides mapping between Java objects and database tables, along with featu...read more
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Q2. What is cyclic barrier
Ans. 
Cyclic barrier is a synchronization aid that allows a set of threads to wait for each other to reach a common barrier point.
• Cyclic barrier is similar to CountDownLatch but can be reused after the barrier point is reached.

• It is initialized with a count of the number of threads that must invoke await() before the barrier is tripped.

• Threads wait at the barrier until all threads have invoked await(), then the barrier is re...read more
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Q1. Data Structures
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Q2. Python Lambda Function
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Q1. What are your Strengths
Ans. 
My strengths include strong analytical skills, attention to detail, and problem-solving abilities.
• Strong analytical skills - able to analyze complex data sets and derive meaningful insights

• Attention to detail - meticulous in ensuring data accuracy and quality

• Problem-solving abilities - adept at identifying and resolving data-related issues

• Experience with data manipulation tools like SQL, Python, and Spark
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Q2. Why you are looking for job change
Ans. 
Seeking new challenges and growth opportunities in a different environment.
• Looking for new challenges to enhance my skills and knowledge

• Seeking growth opportunities that align with my career goals

• Interested in exploring different technologies and industries

• Want to work in a more collaborative team environment

• Seeking better work-life balance or location proximity
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Q1. Brief me about yourself
Ans. 
I am a dedicated Software Test Engineer with 5 years of experience in manual and automated testing.
• 5 years of experience in software testing

• Proficient in manual and automated testing

• Strong knowledge of testing methodologies and tools

• Experience in creating test plans and test cases

• Good communication and problem-solving skills
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Q2. What is your skills
Ans. 
I have strong skills in manual and automated testing, test planning, test case design, defect tracking, and regression testing.
• Proficient in manual testing techniques and methodologies

• Experience in creating test plans and test cases

• Skilled in using automated testing tools like Selenium

• Ability to track and manage defects effectively

• Experience in regression testing to ensure software quality

• Familiarity with Agile and Scr
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