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TCS iON Data Analyst Interview Questions and Answers
TCS iON Data Analyst Interview Experiences
5 interviews found
Anonymous
Selected
I appeared for an interview in May 2025, where I was asked the following questions.
- Q1. Why should we here you
- Q2. Why did you went to work here?
- Q3. How much salary do you expect?
- Q4. Self introduction?
- Q5. What are your goals for future
Interview Preparation Tips
Selected
I appeared for an interview in May 2025, where I was asked the following questions.
- Q1. Self Introduction
- Q2. Skillls for Degree
I applied via Naukri.com and was interviewed in Sep 2023. There were 3 interview rounds.
Hacker Rank test Write a query to fetch the EmpFname from the EmployeeInfo table in upper case and use the ALIAS name as EmpName
(1 Question)
- Q1. SQL or Structured Query Language is a standard language for dealing with relational databases. With the humongous amount of data present, it is very important for us to understand how to use queries to ret...
Selected
I applied via Campus Placement and was interviewed in May 2023. There were 2 interview rounds.
(1 Question)
- Q1. Tell me about your project
(1 Question)
- Q1. Why do you want to join this company
I applied via Naukri.com and was interviewed in Oct 2021. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. Types of join and explain
- Ans.
Types of join are inner, left, right and full outer join.
Inner join returns only the matching rows from both tables.
Left join returns all the rows from the left table and matching rows from the right table.
Right join returns all the rows from the right table and matching rows from the left table.
Full outer join returns all the rows from both tables, with NULL values in the columns where there is no match.
Join is used t...
- Q2. Types of data in python
- Ans.
Python supports various data types including numeric, string, boolean, list, tuple, set, and dictionary.
Numeric data types include int, float, and complex
String data type is represented by str
Boolean data type is represented by bool
List data type is represented by list
Tuple data type is represented by tuple
Set data type is represented by set
Dictionary data type is represented by dict
Interview Preparation Tips
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
I applied via Recruitment Consultant and was interviewed in Mar 2018. There was 1 interview round.
Interview Preparation Tips
EDI related questions were asked. All type of file conversion and Excel formulas been asked.
Prepare well with on the above areas. It takes around 30 minutes.
Skills: Problem Solving, Analytical Skills, Presentation Skills, Time Management
Duration: <1 week
Interview Questionnaire
2 Questions
- Q1. If you are fresher, good communication is only enough to crack all the levels.
- Q2. If you have experience, you need to explain the project and workflow with good communication without lag.
Interview Preparation Tips
Rubesh Sekar
(1 Question)
- Q1. How SQL DB works
Skills evaluated in this interview
Selected
I applied via AmbitionBox and was interviewed in Nov 2024. There were 4 interview rounds.
(2 Questions)
- Q1. About your self
- Q2. Communication skills
(3 Questions)
- Q1. Programming language
- Q2. What tools do you utilize for data analysis?
- Ans.
I utilize tools such as Excel, Python, SQL, and Tableau for data analysis.
Excel for basic data manipulation and visualization
Python for advanced data analysis and machine learning
SQL for querying databases
Tableau for creating interactive visualizations
- Q3. Pandas numpy seaborn matplot
Data analysis of code in the context of data analysis.
Coding logical question paper.
(1 Question)
- Q1. Introduce yourself
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