NICE Interview Questions and Answers

CI/CD flow involves continuous integration, testing, deployment, and monitoring of code changes.

• Code is pushed to version control system (e.g. Git)

• Automated build and test process is triggered

• Code is deployed to testing environment for validation

• If tests pass, code is deployed to production environment

• Monitoring and feedback loop for continuous improvement

Design a secure and efficient file download and upload system.

• Implement secure authentication and authorization mechanisms to control access to files

• Use encryption to protect data during transmission and storage

• Utilize a user-friendly interface for easy file upload and download

• Consider implementing version control for files to track changes and updates

Functional components are stateless and use functional programming concepts, while class components have state and lifecycle methods.

• Functional components are simpler and easier to read/write.

• Class components have access to lifecycle methods like componentDidMount.

• Functional components can use hooks like useState and useEffect.

• Class components are typically used for more complex components with state management.