TCS Big Data Developer Interview Questions and Answers

Q1. Complete technical evaluations/questions related to the Tools i.e. Hadoop, Hive, Impala, Spark, Sqoop, SQL, Scala, Python.
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2nd round is technical + Manager both discussions

Q1. HR discussion related Role, Salary, location etc.
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Q1. More on Technical area
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Q1. More on Technical area
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Q1. Technical + Behaviour
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Q1. Technical + Behaviour
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Q1. Expectation and Genaral
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Q1. What is scd type 2?
Ans. 
SCD type 2 is a method used in data warehousing to track historical changes by creating a new record for each change.
• SCD type 2 stands for Slowly Changing Dimension type 2

• It involves creating a new record in the dimension table whenever there is a change in the data

• The old record is marked as inactive and the new record is marked as current

• It allows for historical tracking of changes in data over time

• Example: If a cust...read more
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Q2. Pyspark question read CSV from folder and add column in each csv file and write it to different location.
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Q1. Data engineer roles and resposibilities
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Q1. Explain your project structure ?
Ans. 
My project structure follows a modular approach with separate folders for data ingestion, processing, and storage.
• Separate folders for data ingestion, processing, and storage

• Use of version control for tracking changes

• Documentation for each module and process

• Unit tests for data pipelines

• Logging and monitoring for tracking data flow
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Q2. What is mean by dag ?
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DAG stands for Directed Acyclic Graph, a data structure used to represent dependencies between tasks in a workflow.
• DAG is a collection of nodes connected by directed edges, where each edge represents a dependency between tasks.

• It is acyclic, meaning there are no cycles or loops in the graph.

• DAGs are commonly used in data processing pipelines to ensure tasks are executed in the correct order.

• Example: In a DAG representi...read more
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1. Questions on spark basica
2. Sql coding questions
3. Java or scala basics

We can that group discussion also

I give assignment when give any topics

Q1. Related to data entry operator
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Q2. Any data related to company
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Q3. I give my best in thiscompany
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Yes i give to my best with tha company all issues to slove
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Q4. I do hard work to growth tha company
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Yes i will do with tha company all issues to slove
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Q5. I completed my worktime to time
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Yes i complete with tha company all issues to slove
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Q1. What is data entry? How to do data entry?
Ans. 
Data entry is the process of entering, updating, or verifying data in a computer system or database.
• Data entry involves inputting alphanumeric data into a computer system.

• Accuracy and speed are important in data entry.

• Common tools used in data entry include keyboards, scanners, and data entry software.

• Examples of data entry tasks include entering customer information, updating inventory records, and transcribing handwr
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Q2. What is your passion?
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Q3. What kind of work you hava to work in thise office
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Q4. How to like thise company
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