IRISSTAR Technologies Interview Questions and Answers

Monolithic to Microservices conversion involves breaking down a large application into smaller, independent services.

• Identify the different functionalities of the monolithic application

• Decompose the application into smaller services based on these functionalities

• Use APIs for communication between services

• Implement service discovery and load balancing for scalability

• Containerize services using tools like Docker and orchestrate them with Kubernetes

To write code as platform independent, use programming languages that are supported on multiple platforms and avoid platform-specific code.

• Use programming languages like Java, Python, or JavaScript that are supported on multiple platforms.

• Avoid using platform-specific libraries or APIs in your code.

• Test your code on different platforms to ensure compatibility.

• Use tools like Docker or virtual machines to create a consistent development environment across platforms.

Factorial of a number is the product of all positive integers less than or equal to that number.

• To calculate factorial of a number, multiply all positive integers less than or equal to that number.

• Factorial of 5 (5!) = 5 * 4 * 3 * 2 * 1 = 120

• Factorial of 0 is defined as 1, so 0! = 1

OOPs concepts are the fundamental principles of object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.

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

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

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

• Abstraction: Hiding the complex implementation details and showing only the necessary featu...read more

SOLID principles are a set of five design principles that help make software designs more understandable, flexible, and maintainable.

• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of its subclasses without affecting the functionality.

• I - Interface ...read more