Winjit Technologies Senior Software Engineer Interview Questions and Answers

Basic Apti questions

Basic Java Coding test

Q1. Basic JAVA fundamentals
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Mcat Aptitude for general MCQ

Q1. Python/Java Development test
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Q2. What is Object-oriented programming?
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Object-oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Encapsulation: Objects can encapsulate data and behavior within a single unit.

• Inheritance: Objects can inherit attributes and methods from other objects.

• Polymorphism: Objects can take on different forms or have multiple behaviors.

• Example: Classes in Java or C++ are used to create objects with propertie...read more
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Q3. Explain API Gateway.
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API Gateway is a server that acts as an API front-end, receiving API requests, enforcing throttling and security policies, passing requests to the back-end service, and then passing the response back to the requester.
• API Gateway acts as a single entry point for all client requests to the backend services.

• It can handle tasks like authentication, authorization, rate limiting, caching, and request/response transformations...read more
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Q4. What is Spring?
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Spring is a lightweight framework for building enterprise applications in Java.
• Provides comprehensive infrastructure support for developing Java applications

• Facilitates easier configuration and integration of various components

• Promotes good programming practices like dependency injection and aspect-oriented programming

• Includes modules like Spring Core, Spring MVC, Spring Security, etc.

• Example: @Autowired annotation for...read more
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Q5. What is Normalization?
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Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization is used to eliminate data redundancy by breaking up tables into smaller tables and defining relationships between them.

• It helps in reducing data anomalies such as insertion, update, and deletion anomalies.

• Normalization is achieved through a series of normal forms (1NF, 2NF, 3NF, BCNF, etc.)

• For exa...read more
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Q1. Difference between Sanity & Smoke
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Sanity testing is a subset of regression testing, while smoke testing is a subset of acceptance testing.
• Sanity testing is performed to ensure that the critical functionalities of the software are working as expected.

• Smoke testing is performed to verify if the software build is stable enough for further testing.

• Sanity testing is usually performed after major changes or bug fixes.

• Smoke testing is performed on each build ...read more
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