Xylem Resource Management Interview Questions and Answers

Q1. Tell me about yourself.
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Q1. Tell me more about your last task that you worked on.
Ans. 
Developed a web application for managing customer orders and inventory.
• Used JavaScript, HTML, and CSS to build the front-end interface.

• Implemented a RESTful API using Node.js and Express.js for the back-end functionality.

• Utilized a PostgreSQL database to store and retrieve data.

• Implemented authentication and authorization features for secure access.

• Performed unit testing and debugging to ensure the application's functi...read more
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Q2. Design a System from High level and low level
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Designing a system involves creating a high-level architecture and breaking it down into low-level components.
• Start by identifying the problem the system needs to solve

• Create a high-level architecture that outlines the major components and their interactions

• Break down each component into smaller, more manageable pieces

• Design each low-level component with a specific function in mind

• Ensure that all components work togeth...read more
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Q3. Some direct Questions from SQL
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Q1. Moving average in pandas
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Moving average in pandas is a statistical calculation that smooths out fluctuations in data by averaging values over a specified time period.
• Use the 'rolling' function in pandas to calculate moving averages

• Specify the window size for the moving average calculation

• Example: df['moving_avg'] = df['column'].rolling(window=3).mean()
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Q2. About Imputations
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Q1. What are components
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Components are reusable and independent parts of a software system that perform specific functions.
• Components are modular and can be easily integrated into different parts of a software system.

• They help in organizing code and promoting reusability.

• Examples include buttons, input fields, and dropdown menus in a user interface.

• Components can be class-based (e.g. React components) or function-based (e.g. Angular component
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Q2. Es6 features in javascript
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ES6 features in JavaScript include arrow functions, classes, template literals, destructuring, and more.
• Arrow functions provide a more concise syntax for writing functions.

• Classes allow for easier object-oriented programming.

• Template literals enable easier string interpolation.

• Destructuring simplifies extracting values from arrays and objects.
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Good test soo check

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