Trigyn Technologies Interview Questions and Answers

SOLID principles are five design principles aimed at making software designs more understandable, flexible, and maintainable.

• S - Single Responsibility Principle: A class should have one reason to change. Example: A class handling user data should not also handle logging.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification. Example: Use interfaces to add new features...read more

Effective memory optimization techniques enhance mobile app performance and user experience by managing resources efficiently.

• Use lazy loading to load resources only when needed, e.g., images in a gallery app.

• Implement caching strategies to store frequently accessed data, reducing network calls.

• Optimize image sizes and formats to decrease memory usage, such as using WebP instead of PNG.

• Utilize memory-efficient dat...read more

Developing an Azure solution involves data integration, processing, and visualization using on-premises datasets.

• Identify on-premises datasets: Assess the data sources available, such as SQL databases, CSV files, or APIs.

• Data integration: Use Azure Data Factory to create pipelines that extract data from on-premises sources and load it into Azure services.

• Data storage: Choose appropriate Azure storage solutions lik...read more

Procedure to find and delete duplicates in SQL

• Use a SELECT statement with GROUP BY to identify duplicates

• Use a DELETE statement with a subquery to remove duplicates

• Consider using a temporary table to store the duplicates before deletion

Hibernate is configured in a Spring project using the HibernateTemplate or EntityManagerFactory.

• Hibernate can be configured in a Spring project by defining the necessary beans in the application context XML file.

• The HibernateTemplate class can be used to perform CRUD operations on the database using Hibernate.

• Alternatively, the EntityManagerFactory can be configured to work with Hibernate in a Spring project.

• The H...read more

Spring works by storing potential energy when compressed or stretched and releasing it when allowed to return to its original shape.

• Springs are made of elastic materials such as metal or rubber.

• When a force is applied to a spring, it compresses or stretches, storing potential energy.

• The amount of potential energy stored in a spring is proportional to the amount of deformation.

• When the force is removed, the spring ...read more

Fibonacci sequence is a series where each number is the sum of the two preceding ones, starting from 0 and 1.

• The Fibonacci sequence starts with 0 and 1.

• The next number is found by adding up the two numbers before it.

• Example: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34...

• It can be implemented using recursion or iteration.

• The formula for the nth Fibonacci number is F(n) = F(n-1) + F(n-2).

React is a JavaScript library for building user interfaces, while React Native is a framework for building mobile applications using React.

• React is a JavaScript library developed by Facebook for building interactive user interfaces.

• React Native is a framework that allows developers to build mobile applications using React.

• React uses a virtual DOM to improve performance by updating only the necessary components.

• Rea...read more