HTC Global Services Technical Lead Interview Questions and Answers

Microservices are a software architecture pattern where applications are built as a collection of small, loosely coupled services.

• Microservices allow for modular development and deployment of applications.

• Each microservice can be developed, deployed, and scaled independently.

• Microservices communicate with each other through APIs.

• They promote flexibility, scalability, and fault tolerance.

• Examples of microservices includ

Data warehouse is a central repository of data used for reporting and analysis.

• Data is extracted from various sources and transformed to fit into the warehouse schema.

• Data is organized into dimensions and facts for efficient querying.

• Used for business intelligence and decision-making.

• In my current project, we use a data warehouse to store and analyze customer behavior data.

• We extract data from our website, mobile app, ...read more

OOPs concepts are used in real life to model objects and their behavior.

• Encapsulation: A car's engine is encapsulated and can only be accessed through specific methods.

• Inheritance: A sports car is a type of car that inherits properties and methods from the car class.

• Polymorphism: A person can be a student, teacher, or employee, each with their own unique behavior.

• Abstraction: A TV remote has buttons that abstract the c...read more

Hashmap is a data structure that stores key-value pairs and uses hashing to locate values based on their keys.

• Hashmap uses an array of linked lists to store key-value pairs.

• The hash function is used to convert the key into an index of the array.

• If two keys have the same hash value, they are stored in the same linked list.

• Hashmap provides constant time complexity for insertion, deletion, and retrieval of values.

• Java's H...read more