HNR Tech Javascript Developer Interview Questions and Answers

In this round mcq question were asked, related to javascript.

In this round, javascript data structures and algorithms questions from freecodecamp were asked.

Q1. Difference between function and method
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Q2. A program related to strings
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Q3. A program related to prime numbers
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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. What is jdk, string related questions, basic java oops questions?
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Q1. ATG Endeca Spring boot microservices
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Q1. Java Oracle Commerce ATG AWS Kafka kubernate
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Q2. Microservices Oracle Commerce AWS Mongo DB
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Python question was there and it was average level not tough

Simple coding questions which was good to go

Q1. General ops concepts
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Q1. Coding with technical questions
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Q1. General questions
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Q1. Related to Linux and Networking
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Q2. Services Samba FTP, Maintenance Mode
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Q3. Troubleshooting of Network
Ans. 
Troubleshooting network involves identifying and resolving issues related to network connectivity and performance.
• Start by identifying the symptoms of the problem

• Check network cables and connections

• Verify network settings and configurations

• Use network diagnostic tools to identify and isolate the problem

• Resolve the issue by applying appropriate fixes

• Test the network to ensure the problem is resolved
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Q1. Qts related to Bootprocess AWS etc
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Q2. Port Forwarding of services
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