TCS Team Lead Interview Questions and Answers

Java OOP concepts include encapsulation, inheritance, polymorphism, and abstraction, forming the foundation of object-oriented programming.

• Encapsulation: Bundling data and methods in a class. Example: class 'Car' with attributes like 'color' and methods like 'drive()'.

• Inheritance: Mechanism to create a new class from an existing class. Example: 'Sedan' class inherits from 'Car' class.

• Polymorphism: Ability to take ...read more

Shrinkage can be controlled through effective inventory management, employee training, security measures, and regular audits.

• Implementing strict inventory management processes to track all products entering and leaving the store

• Providing thorough training to employees on how to identify and prevent theft

• Installing security measures such as surveillance cameras, security tags, and alarm systems

• Conducting regular au...read more

Communication between multiple micro services can be achieved through various methods such as REST APIs, message queues, gRPC, and event-driven architecture.

• Use REST APIs for synchronous communication between micro services.

• Implement message queues like RabbitMQ or Kafka for asynchronous communication.

• Utilize gRPC for efficient communication between services.

• Adopt event-driven architecture using tools like Apache ...read more

Securing APIs involves using authentication, authorization, encryption, and monitoring.

• Implement authentication mechanisms such as OAuth or API keys

• Use authorization to control access to different parts of the API

• Encrypt data transmission using HTTPS

• Regularly monitor API traffic for suspicious activity

• Keep API documentation updated to reflect security measures

Angular is a platform for building web applications with a component-based architecture and a reactive programming model.

• Components: Building blocks of Angular apps, e.g., a user profile component.

• Modules: Containers for components, services, etc., e.g., AppModule.

• Templates: Define the UI layout using HTML and Angular directives.

• Services: Provide reusable business logic, e.g., a data-fetching service.

• Dependency In...read more

Depreciation is the decrease in value of an asset over time. Various methods include straight-line, declining balance, and sum-of-the-years' digits.

• Depreciation is a way to allocate the cost of an asset over its useful life.

• Straight-line depreciation is the simplest method, where the same amount is depreciated each year.

• Declining balance depreciation is an accelerated method, where a higher percentage of the asset...read more