CoinDCX Sdet Engineer Interview Questions and Answers

Coder pad 1 hour test

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Q1. Life cycle hooks
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Q2. How angular works
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Angular is a front-end web framework that allows developers to build dynamic web applications.
• Angular uses TypeScript for building applications.

• It follows the MVC (Model-View-Controller) architecture.

• Angular provides features like data binding, dependency injection, and routing.

• Components are the building blocks of Angular applications.

• Angular CLI (Command Line Interface) is used for creating and managing Angular proje
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Q3. Routing guard and loading
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Q1. Polyfills , basic react app
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DSA, SUM Practice, DSA SUM

DSA Sum Practice DSA Sum

DSA, factorial based question and stack based question

Online coding test with Sql and python questions

Q1. Details about project and experience
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Q2. Pyspark and databricks questions
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Q3. What is Spark context
Ans. 
Spark context is the main entry point for Spark functionality and represents the connection to a Spark cluster.
• Main entry point for Spark functionality

• Represents connection to a Spark cluster

• Used to create RDDs, broadcast variables, and accumulators
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Q4. What is inheritance
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Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Allows for code reusability by creating a new class based on an existing class

• Derived class inherits properties and behaviors of the base class

• Supports the concept of polymorphism and encapsulation

• Example: Class 'Car' can inherit from class 'Vehicle' and inherit its attributes like 'color' and met
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Q5. What is sparkconfig
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SparkConfig is a configuration object used in Apache Spark to set various parameters for Spark applications.
• SparkConfig is used to set properties like application name, master URL, and other Spark settings.

• It is typically created using SparkConf class in Spark applications.

• Example: val sparkConf = new SparkConf().setAppName("MyApp").setMaster("local")
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90 min coding test with 4-5 problems to solve

Q1. Technical rounds mostly goes around the project work ans some were based on the JD.
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Q1. 2 sum problem on number
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Q1. Json data manipulation
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Q1. Normal hr question
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