Ecolab Senior Technical Engineer Interview Questions and Answers

There were 6 questions to be solved. 3 average and 3 tough questions.

Q1. Concepts ask in interview Java Threads Exception Collections Spring boot annotations Git
Add your answer

Q1. A general conversations, regarding my experience, project.
Add your answer

Q1. Write unit testing for adding two nimbers
Ans. 
Unit testing for adding two numbers
• Create a test case with two numbers and expected sum

• Call the function that adds two numbers

• Assert that the result matches the expected sum
Answered by AI
Add your answer

Q1. Explain challenge you faced in your last project
Add your answer

Q1. Salary expectations
Add your answer

Q1. What is real dom and virtual dom in react
Ans. 
Real DOM is the actual representation of the HTML structure, while Virtual DOM is a lightweight copy used for efficient updates.
• Real DOM is slower as it directly manipulates the HTML structure.

• Virtual DOM is faster as it updates the lightweight copy and then syncs with the real DOM.

• React uses the Virtual DOM to minimize unnecessary re-rendering of components.

• Virtual DOM allows for efficient batch updates, improving per...read more
Answered by AI
Add your answer

Q1. Check about the company be presentable good grammar and have an accent
Add your answer

Q1. Do you know SQL
Ans. 
Yes, I am proficient in SQL and have experience writing complex queries.
• Proficient in writing SQL queries

• Experience with complex joins and subqueries

• Familiar with database management systems like MySQL, PostgreSQL, etc.
Answered by AI
Add your answer
Q2. Do you know excel
Ans. 
Yes, I am proficient in Excel and have experience using it for data analysis and reporting.
• Proficient in creating formulas and functions

• Experienced in data manipulation and analysis

• Skilled in creating charts and graphs for reporting purposes
Answered by AI
Add your answer

Q1. About MVC Cache, MVC Session Management, Model binding, MVC Performance increasing technics, and some basic questions in C#. Simple html coding test
Add your answer
Q2. In SQL Server : About indexes, functions , procedure tuning, transactions
Add your answer

Q1. About achievements, behavior, weakness, client handling, professional strengths, problem soving skills
Add your answer