Antino Node JS Developer Interview Questions and Answers

Q1. Solid Principle, Design Patterns,
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Q2. React sharing data btw siblings without any state management.
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Q3. NodeJs is single threaded then why it feels concurrent?
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Q1. Questions related micro services
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Q2. Message queue related questions
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Q3. NodeJs related questions: Event loop
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Q1. Tell us about your experience.
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Q2. In english, give me a feedback you received lately.
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Q1. Brief explanation of SOLID principles
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Q2. Ref vs out arguments
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Q1. Api to update employees details
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Create an API endpoint to update employee details.
• Use PUT method to update employee details

• Validate input data before updating

• Return success message or error message accordingly
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Q1. What is solid principple
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SOLID is a set of five design principles that help make software designs more understandable, flexible, and maintainable.
• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of its subclasses with...read more
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Q2. Whats are oops in c#
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Object-oriented programming concepts in C#
• 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 for objects to take on multiple forms

• Abstraction: hiding the complex implementation details and showing only the necessary features
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Aptitude,reasoning,verbal,C language,Java,C++

Q1. What is interface in JAVA
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Q2. Explain OOPS in JAVA
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Q1. How to create restfull api
Ans. 
To create a RESTful API, define endpoints, use HTTP methods, handle requests and responses, and follow REST principles.
• Define endpoints for different resources (e.g. /users, /products)

• Use HTTP methods (GET, POST, PUT, DELETE) for CRUD operations

• Handle requests and responses in JSON format

• Follow REST principles like statelessness, uniform interface, and client-server architecture
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Q2. How to do pagination in jpa
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Pagination in JPA allows fetching a subset of results from a query.
• Use the setFirstResult() method to set the starting index of the results to retrieve

• Use the setMaxResults() method to set the maximum number of results to retrieve

• Combine setFirstResult() and setMaxResults() to implement pagination
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Oop concept, Multithread, String