TCS Lead Analyst Interview Questions and Answers

Q1. Prepare your current work and technologies used
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Q2. Recommended interview questions OOPS , Multithreading, Collections package
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Duration two hours, Analytics, Aptitude and General

Q1. What is manual testing and types of testing
Ans. 
Manual testing is a process of testing software manually without using any automated tools.
• Types of manual testing include functional testing, regression testing, integration testing, user acceptance testing, and exploratory testing.

• Functional testing checks if the software meets the specified requirements.

• Regression testing ensures that changes made to the software do not affect its existing functionality.

• Integration ...read more
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Q2. What are SQL joins and types
Ans. 
SQL joins are used to combine data from two or more tables based on a related column.
• Types of SQL joins include inner join, left join, right join, and full outer join.

• Inner join returns only the matching rows from both tables.

• Left join returns all rows from the left table and matching rows from the right table.

• Right join returns all rows from the right table and matching rows from the left table.

• Full outer join returns...read more
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Round duration - 140 minutes
Round difficulty - Medium

Test timing was at 2:00 pm , it was conducted in a college and the environment was good for the test. Camera was a primary part of test, so no suspicious activity.

Q1. 
Sum of Two Numbers Represented as Arrays
Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an ar...read more
Ans. 
Given two numbers represented as arrays, calculate their sum and return the result as an array.
• Iterate through the arrays from right to left, adding digits and carrying over if necessary

• Handle cases where one array is longer than the other by considering the remaining digits

• Ensure the final sum array does not have any leading zeros
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Round duration - 20 minutes
Round difficulty - Easy

The round was conducted at around 12 p.m. I was called at the college location and then it was conducted. The interviewer was quite polite and frank.

Round duration - 8 minutes
Round difficulty - Easy

This round was conducted right after finishing and clearing the technical round at the same place and on the same day.