TCS Consultant Interview Questions and Answers

Spring Boot provides robust exception handling mechanisms to manage errors and improve application reliability and user experience.

• Global Exception Handling: Use @ControllerAdvice to handle exceptions globally across all controllers. Example: @ExceptionHandler(NullPointerException.class) to handle null pointer exceptions.

• Custom Exception Classes: Create custom exceptions by extending RuntimeException. Example: pub...read more

Meter to cash refers to the process of utility billing from meter reading to payment collection.

• Meter Reading: Collecting data from utility meters (e.g., electricity, water).

• Billing: Generating invoices based on meter readings and usage.

• Payment Processing: Accepting payments through various channels (online, in-person).

• Customer Service: Addressing inquiries and issues related to billing.

• Example: A utility company ...read more

Microservices are a software development technique where applications are broken down into small, independent services that communicate with each other.

• Microservices are designed to be small, focused, and independently deployable.

• Each microservice typically performs a specific business function and communicates with other services through APIs.

• Microservices allow for greater flexibility, scalability, and resilienc...read more

RESTful APIs are lightweight, stateless, and use standard HTTP methods, while SOAP APIs are more rigid, use XML for messaging, and have built-in security features.

• RESTful APIs are lightweight and stateless, making them easier to scale and maintain.

• SOAP APIs are more rigid and use XML for messaging, which can be more complex and less flexible.

• RESTful APIs use standard HTTP methods like GET, POST, PUT, DELETE, while...read more

To install WebSphere, download the installation files, run the installer, configure the installation settings, and start the server.

• Download the WebSphere installation files from the IBM website.

• Run the installer and follow the on-screen instructions to install WebSphere.

• Configure the installation settings such as ports, security settings, and database connections.

• Start the WebSphere server and verify that it is r...read more

ArrayList is a dynamic array in Java that can grow or shrink in size as needed.

• ArrayList is a class in Java's collection framework.

• It allows for dynamic resizing of the array.

• Elements can be added, removed, or accessed using indexes.

• Example: ArrayList<String> names = new ArrayList<String>();

Object-oriented programming features like encapsulation, inheritance, polymorphism, and abstraction.

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

• Inheritance: Ability to create a new class that inherits attributes and methods from an existing class.

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

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

Business rules define the logic and constraints for data validation and automation, while business processes define the sequence of tasks to be performed to achieve a specific outcome in MS Dynamics.

• Business rules are used to enforce data quality and consistency, such as requiring a certain field to be filled out or limiting the values that can be entered.

• Business processes are used to automate and streamline work...read more