phData Senior Data Engineer Interview Questions and Answers

Q1. Asking about the whereabouts
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Q2. Checking com skills and availability
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Q1. Basic questions based on resume
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Q2. Basic .net questions
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Q3. Logical questions related to problem solving
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Q1. Four Pillars of OOPS in Java?
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Encapsulation, Inheritance, Polymorphism, Abstraction are the four pillars of OOPS in Java.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the implementation details and showing only the necessary features.
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Q2. What is a constructor in Java?
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A constructor in Java is a special type of method that is used to initialize objects.
• Constructors have the same name as the class they are in.

• They do not have a return type, not even void.

• Constructors are called when an object of a class is created.

• Example: public class Car { public Car() { // constructor code } }
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Q1. What is single page application
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Single page application is a web application that loads a single HTML page and dynamically updates the content as the user interacts with the app.
• SPA uses AJAX and HTML5 to create fluid and responsive user experience.

• It eliminates the need for page reloading during use, making it faster and more efficient.

• Examples include Gmail, Facebook, and Google Maps.
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Q2. What is state management
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State management is the process of managing the state of an application, including data flow, user interface updates, and user interactions.
• State management involves storing and updating the state of an application to ensure data consistency.

• It helps in managing user interface updates based on changes in the application state.

• State management is crucial for handling user interactions and maintaining a seamless user exp...read more
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Q1. Basic flutter coding questions
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Q1. What is jdk, string related questions, basic java oops questions?
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Q1. OOP questions SQL Questions Programming structure
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Q1. SQL questions MVC and C# related questions
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It was of 75 minutes. And Questions are related from Quantitative, logical reasoning and Coding.

DSA Questions were asked there