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Rrinnovative Interview Questions and Answers

Updated 16 Oct 2024
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Q1. Check knowledge on String Constant Pool ?

Ans.

String Constant Pool is a special area in memory where String literals are stored to optimize memory usage.

  • String literals are stored in the String Constant Pool to avoid duplicate storage.

  • When a new String is created with the same value as an existing String literal, it refers to the same object in the pool.

  • Using intern() method on a String object can force it to be stored in the String Constant Pool.

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Q2. What is docker and kubernetics

Ans.

Docker is a platform for developing, shipping, and running applications in containers. Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications.

  • Docker allows developers to package applications and their dependencies into a container that can run on any system.

  • Kubernetes helps in managing multiple containers across a cluster of servers, providing features like scaling, load balancing, and self-healing.

  • Docker is used f...read more

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Q3. Difference between interface and abstract class

Ans.

Interface is a contract for classes to implement, while abstract class can have some implementation.

  • Interface cannot have any implementation, only method signatures.

  • A class can implement multiple interfaces but can only inherit from one abstract class.

  • Abstract class can have both abstract and concrete methods.

  • Interfaces are used for achieving multiple inheritance in Java.

  • Example: interface Animal { void eat(); } abstract class Mammal { abstract void breathe(); }

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Q4. What are pros of Ivy Engine?

Ans.

Ivy Engine is a powerful software engine with several advantages.

  • 1. Ivy Engine offers high performance and efficiency.

  • 2. It provides excellent scalability and can handle large datasets.

  • 3. Ivy Engine has a user-friendly interface and is easy to use.

  • 4. It supports multiple programming languages and platforms.

  • 5. Ivy Engine offers advanced data analytics and machine learning capabilities.

  • 6. It provides robust security features to protect sensitive data.

  • 7. Ivy Engine has a strong ...read more

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Q5. What is monolithic

Ans.

Monolithic refers to a software architecture where all components are tightly coupled and dependent on each other.

  • All components of the application are interconnected and interdependent

  • Changes to one part of the application require changes to other parts

  • Difficult to scale and maintain due to the tightly coupled nature

  • Examples include traditional desktop applications and some legacy systems

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Q6. What is jwt token

Ans.

JWT token is a JSON Web Token used for securely transmitting information between parties as a compact and self-contained way.

  • JWT token is composed of three parts: header, payload, and signature.

  • It is commonly used for authentication and information exchange in web applications.

  • JWT tokens are signed using a secret key or a public/private key pair to verify their authenticity.

  • Example: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0I...read more

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Q7. Microservices design pattern

Ans.

Microservices design pattern is an architectural style that structures an application as a collection of loosely coupled services.

  • Each service is responsible for a specific business function and can be developed, deployed, and scaled independently.

  • Communication between services is typically done through APIs, allowing for flexibility and resilience.

  • Microservices promote agility, scalability, and fault isolation in software development.

  • Examples of companies using microservices...read more

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Q8. Sql using mongo db

Ans.

MongoDB is a NoSQL database, so it does not use SQL. Instead, it uses a query language similar to JSON.

  • MongoDB uses a query language called MongoDB Query Language (MQL) which is similar to JSON.

  • Queries in MongoDB are expressed as JSON-like documents.

  • There is no need for SQL when working with MongoDB.

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Interview Process at Rrinnovative

based on 11 interviews
2 Interview rounds
Technical Round - 1
Technical Round - 2
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