Merkle Full Stack Developer Interview Questions and Answers

Q1. Difference between authentication and authorization
Ans. 
Authentication verifies the identity of a user, while authorization determines what a user can access.
• Authentication confirms the user's identity through credentials like passwords or biometrics

• Authorization controls the user's access to resources or features based on their identity and permissions

• Example: Logging into a website with a username and password is authentication, while being able to view/edit specific page
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Q2. What is promises
Ans. 
Promises are objects representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations in JavaScript.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() to handle success and .catch() to handle errors.
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Q3. What is rxjs and its uses
Ans. 
RxJS is a library for reactive programming using Observables to handle asynchronous data streams.
• RxJS stands for Reactive Extensions for JavaScript.

• It allows you to work with asynchronous data streams and handle events.

• RxJS provides operators to transform, filter, combine, and create observables.

• Example: Using RxJS to handle user input events in a web application.
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Programming language, c, html, css, javascript, php, angular,

Q1. Java Basic questions, Design Patterns, HashMap, ConcurrentHashMap.
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Q2. Kafka, Springboot annotations, Hibernate, Entities relations, Dependency Injections
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Q3. Angular Observables, Pipes, Authentications, Lazy Loading.
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Q4. SQL grouby,having query. DSA on collections, streams methods
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Q1. Project discussions, Unit testings, scrums, agile etc corporate related stuffs
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Q2. Challenges faced, If you want any leaves this year, any marriage or something like w.t.f!!!
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Q1. Why switching, Asia's largest healthcare domain compay, Billions of evaluations, But cannot even provide 12LPA+ for 3Y+
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Q2. Again asked if there is any leaves required like marriage, they are in healthcare domain and they just provide 4L insurance lol!!!
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Q1. CTC from the previous employer
Ans. 
CTC from previous employer is confidential information.
• CTC from previous employer is considered confidential

• It is not appropriate to disclose salary details from previous job

• Focus on discussing your skills and experiences instead of previous salary
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Q2. Expected CTC for applying in neosoft
Ans. 
Expected CTC should be based on industry standards, experience, skills, and location.
• Research industry standards for Full Stack Developers in the specific location

• Consider your experience level and skills when determining expected CTC

• Factor in the cost of living in the location where the job is based

• Be prepared to negotiate based on the job responsibilities and benefits offered
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Coding test in javascript and question related to the tech stack

Q1. If there is any conflict between you and you coworker, what would you do
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You will have to brush up core java concepts like oops, multithreading, string manupulation, immutable, java 8 features

Q1. Java core basics, oops concept, multithreading
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Q2. Live project tasks, roles and responsibilities
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Q1. Question related to C#
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