Neora Entertainment Interview Questions and Answers

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Q1. Fundamentals of data formats used in spark

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Data formats used in Spark include JSON, Parquet, Avro, and ORC.

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To detect web browser, use navigator.userAgent property.

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Apache Spark is a fast and general-purpose cluster computing system. Apache Kafka is a distributed streaming platform.

Apache Spark is used for big data processing and analytics, providing in-memory computing capabilities.
Apache Kafka is used for building real-time data pipelines and streaming applications.
Apache Spark can be integrated with Apache Kafka for real-time data processing.
Both Apache Spark and Apache Kafka are part of the Apache Software Foundation.
Apache Spark sup...read more

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Inheritance in Kotlin allows a class to inherit properties and methods from another class.

Use the 'open' keyword to mark the superclass as inheritable
Use the 'override' keyword to override a method or property in the subclass
Use the 'super' keyword to call the superclass's implementation of a method or property
Example: class SubClass : SuperClass() { override fun method() { super.method() } }

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Mixin is a way to reuse code in multiple classes without inheritance.

Mixin is a programming concept that allows code to be reused in multiple classes without inheritance.
It is achieved by including a module or class in another class.
Mixins are commonly used in object-oriented programming languages like Ruby and Python.
They help to reduce code duplication and improve code organization.
Example: A class for a car may include a mixin for a GPS system to add GPS functionality.

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Closure is a feature in programming languages that allows a function to access variables outside its scope.

Closure is a way to create a function inside another function and access the outer function's variables.
It allows for encapsulation and data privacy.
Closures are commonly used in event handlers and callbacks.
Example: function outer() { let x = 10; function inner() { console.log(x); } return inner; } const closure = outer(); closure(); // Output: 10