Belcan Lead Engineer Interview Questions and Answers

Basic questions for aptitude genearal personl developing questions

Q1. What is react native
Ans. 
React Native is a framework for building mobile applications using JavaScript and React.
• Allows developers to write code once and deploy it across multiple platforms

• Provides access to native features and APIs of the device

• Supports hot reloading for faster development

• Used by companies like Facebook, Instagram, and Airbnb
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Q2. Diff use memo and use reducer
Ans. 
Memo is used for optimizing performance by caching the result of a function, while reducer is used for managing state in React applications.
• Memo is used to memoize the result of a function and prevent unnecessary re-renders.

• Reducer is used to manage state in React applications by updating the state based on actions.

• Memo can be used with useMemo hook in React to optimize performance.

• Reducer is typically used with useRed...read more
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Q1. Salary discussion
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Q2. Notice period about compnay
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Q1. It was virtual interview.
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Q2. 1. Binary Search with code 2. Hash Map in deep 3. Core Java concepts
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Q1. Not good they will forcefully ask you to resign
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Q2. Yes with the name of cost cutting
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Q1. Java 8 programs and micro services spring boot basic questions
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Q1. Salary negotiation only and about my past experience
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Q1. Data modelling and its benefits
Ans. 
Data modelling is the process of creating a conceptual representation of data and its relationships.
• Helps in understanding complex data structures

• Improves data quality and accuracy

• Facilitates database design and optimization

• Enables efficient data retrieval and analysis

• Examples: ER diagrams, UML diagrams, Data flow diagrams
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Q1. What are your salary expectations?
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Q2. Share details of your previous job.
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Q3. Why are you looking for a change?
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Q1. Dataware house concepts
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Q2. Sql related scenario based questions
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Q1. More like manager one to one with some technical questions
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Q1. Why do i offer you...justify the reason
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Q1. Spring boot questiions
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Q2. Java stream api coding
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Q1. What are the modules in spring boot
Ans. 
Spring Boot has several modules to support different functionalities.
• Spring Boot Core

• Spring Boot Actuator

• Spring Boot Data

• Spring Boot Security

• Spring Boot Test

• Spring Boot Web

• Spring Boot Batch

• Spring Boot Integration

• Spring Boot Cloud
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Q1. What are the modules in spring mvc
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Spring MVC has several modules including core, web, context, beans, and more.
• Core module provides the basic functionality of the framework

• Web module provides support for web applications

• Context module provides support for application context

• Beans module provides support for dependency injection

• Other modules include JDBC, ORM, AOP, and more
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Q1. Why do you want to join the org
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