Impact Analytics QA Engineer Interview Questions and Answers

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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In Mu Sigma APT round is divided into 3 sections Quant, Logical and verbal

Q1. Basic mern stack question along with some coding question.
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Q1. Same as round one. This one is in bit details.
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Q1. Basic hr round. Lot of different aspect they gave.
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Q1. What fifo? diff btwn fifo and lifo
Ans. 
FIFO stands for First In, First Out. LIFO stands for Last In, First Out.
• FIFO is a method for organizing and manipulating a data buffer, where the first element added is the first to be removed.

• LIFO is a method where the last element added is the first to be removed.

• FIFO is like a queue, while LIFO is like a stack.

• Example: In a FIFO queue, if elements A, B, and C are added in that order, they will be removed in the same...read more
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Q1. Explain oops concept
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OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOP focuses on creating objects that interact with each other to solve problems.

• Key concepts include classes, objects, inheritance, polymorphism, and encapsulation.

• Classes are blueprints for creating objects, while objects are instances of classes.

• Inheritance allows a class to i...read more
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Coding was good and it was based on bubble sort

Q1. Gave case study based on java scheduler
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Q1. Gave programming question to solve
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Q1. Typical HR questions
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