EPAM Systems Interview Questions, Process, and Tips

StateHoist is a library in Android development used for managing the lifecycle of Android components.

• StateHoist helps in handling configuration changes and other lifecycle events in Android apps.

• It simplifies the process of saving and restoring instance state of activities and fragments.

• StateHoist can be used to retain data across configuration changes, such as screen rotations.

• It provides a convenient way to manage th...read more

ViewModel is a class that is designed to store and manage UI-related data in a lifecycle conscious way.

• ViewModel survives configuration changes such as screen rotations.

• ViewModel is not destroyed when an activity is destroyed and recreated.

• ViewModel is typically used to hold and manage data for UI components such as activities and fragments.

SOLID is a set of five principles in object-oriented programming to 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 it...read more

OOPS concepts are fundamental principles in object-oriented programming that help in organizing and designing code efficiently.

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

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

• Polymorphism: Ability of objects to take on multiple forms or behaviors.

• Abstraction: Hiding the complex implementation...read more

Collibra uses centralized, decentralized, and federated operating models.

• Centralized operating model: decision-making authority is held by a central team or individual.

• Decentralized operating model: decision-making authority is distributed across different teams or individuals.

• Federated operating model: a combination of centralized and decentralized models, with some decisions made centrally and others made by distribu...read more