BCG Python Fullstack Developer Interview Questions and Answers

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Q1. Do you know Caching ?
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Caching is the process of storing data in a temporary location to reduce access time and improve performance.
• Caching helps in reducing the load on the server by storing frequently accessed data closer to the user.

• Examples of caching include browser caching, CDN caching, and database caching.

• Caching can be implemented at different levels such as application-level caching, database-level caching, and server-level caching
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Q2. Spring vs spring boot?
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Spring is a framework for building Java applications, while Spring Boot is a tool that simplifies the setup and configuration of Spring applications.
• Spring is a comprehensive framework that provides support for various Java technologies like JDBC, JPA, and REST.

• Spring Boot is an opinionated tool that aims to simplify the development process by providing defaults for configuration and dependencies.

• Spring Boot includes e...read more
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Q1. How do you use joins in spring boot?
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Joins in Spring Boot are used to retrieve data from multiple tables in a database using relationships between them.
• Use @Query annotation with JPQL or native SQL to perform joins in Spring Boot repositories

• Specify the join condition in the query using ON keyword

• Use JOIN FETCH to eagerly fetch associated entities in a single query
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Q2. Experience in production?
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Q1. Project flow from start to end
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The project flow involves planning, development, testing, deployment, and maintenance.
• Initial planning phase to gather requirements and create a project plan

• Development phase where coding and implementation takes place

• Testing phase to ensure the functionality and quality of the project

• Deployment phase to release the project to users

• Maintenance phase to provide updates and support
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Q2. How we connect frontend to backend
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Frontend can connect to backend through API calls, web sockets, or GraphQL queries.
• Use API calls to send requests from frontend to backend and receive responses

• Implement web sockets for real-time communication between frontend and backend

• Utilize GraphQL queries to fetch specific data from backend as needed
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Q1. Tell about Oops
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Object-oriented programming is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Ability of a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstrac...read more
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Q2. What is OOps Concept?
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Object-Oriented Programming (OOP) is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOP focuses on creating objects that interact with each other to solve a problem.

• Key principles of OOP include encapsulation, inheritance, and polymorphism.

• Encapsulation involves bundling data and methods that operate on the data into a single unit.

• ...read more
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Q1. Angular,c#,web api,mvc
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