NTT Data Technical Lead Interview Questions and Answers

I excel as an individual contributor and transition smoothly into a team lead role by leveraging my technical expertise and leadership skills.

• Demonstrate strong technical skills and consistently deliver high-quality work as an individual contributor.

• Proactively seek opportunities to mentor and guide team members, showcasing leadership potential.

• Communicate effectively with team members, fostering collaboration and driv...read more

Springboot is a framework that simplifies the development of Java applications by providing a set of tools and conventions.

• Springboot uses embedded servers like Tomcat or Jetty to run applications.

• It auto-configures many components based on dependencies added to the project.

• It uses annotations like @SpringBootApplication to define the main class of the application.

• Springboot uses Spring Framework's Inversion of Control...read more

SAGA design pattern is used for managing long-lived transactions in distributed systems.

• SAGA pattern breaks down a long transaction into a series of smaller, more manageable steps.

• Each step in the SAGA pattern is a separate transaction that can be rolled back if needed.

• SAGA pattern ensures that the overall transaction is eventually consistent.

• Examples of SAGA pattern implementation include using compensating transactio

I have over 10 years of experience in software development, with a focus on leading teams and delivering high-quality products.

• Led multiple cross-functional teams in developing and launching successful products

• Extensive experience in full stack development, including front-end and back-end technologies

• Strong background in Agile methodologies and project management

• Collaborated with stakeholders to define project require

I have worked on various projects including a mobile app for tracking fitness goals and a web application for managing inventory.

• Developed a mobile app using React Native to track fitness goals and provide workout plans

• Built a web application using Angular for managing inventory and tracking sales

• Implemented RESTful APIs for communication between front-end and back-end systems

SOA focuses on large, monolithic services while Microservices are small, independent services.

• SOA is a centralized architecture with shared services, while Microservices are decentralized with each service having its own database.

• SOA is typically implemented using ESB (Enterprise Service Bus), while Microservices communicate via lightweight protocols like HTTP or messaging queues.

• SOA is more suitable for large enterpri...read more

Yes

• LiveData is lifecycle aware and can be used to observe changes in data.

• ViewModel provides a way to store and manage UI-related data across configuration changes.

• ViewModel can hold LiveData objects to provide data to the UI.

• LiveData and ViewModel work together to ensure data consistency and prevent memory leaks.

The ViewModel survives configuration changes by being retained by the system.

• ViewModels are designed to survive configuration changes like screen rotations or language changes.

• When an activity is destroyed and recreated, the ViewModel is not destroyed and retains its data.

• The ViewModel is associated with the activity's lifecycle and is retained until the activity is finished.

• The retained ViewModel instance can be acces...read more

MVP offers better separation of concerns and easier unit testing compared to MVC.

• MVP separates the presentation layer from the business logic, making it easier to maintain and modify the codebase.

• MVP allows for easier unit testing as the presenter can be tested independently from the view.

• MVP provides better decoupling between components, enabling easier code reuse and scalability.

• MVP promotes a clear separation of con...read more

SSL pinning is a security technique that ensures a client only communicates with a server using a pre-defined public key.

• SSL pinning involves hardcoding the server's public key in the client's code or configuration.

• During the SSL handshake, the client checks if the server's public key matches the pinned key.

• If the keys match, the connection is established; otherwise, it is rejected.

• Pinning prevents man-in-the-middle at

Data security can be achieved through encryption, access controls, backups, and regular security audits.

• Encrypt sensitive data using strong encryption algorithms.

• Implement access controls to restrict unauthorized access to the data.

• Regularly backup the data to prevent data loss.

• Conduct regular security audits to identify and fix vulnerabilities.

• Use secure protocols and communication channels for data transfer.

• Implement...read more

Encryption keys should be securely stored in a separate key management system.

• Encryption keys should not be stored alongside the encrypted data.

• Use a dedicated key management system (KMS) to store and manage encryption keys.

• Implement strong access controls and authentication mechanisms for the KMS.

• Consider using hardware security modules (HSMs) for added security.

• Regularly rotate encryption keys to minimize the impact