DXC Technology Application Development - Senior Analyst Interview Questions and Answers

An end to end data flow is the complete journey of data from its origin to its destination.

• Data is generated at the source

• It is then collected and processed

• The processed data is stored in a database or data warehouse

• The data is then analyzed and transformed into insights

• Finally, the insights are presented to the end user or system

• Example: A customer's online purchase journey from adding items to cart to receiving the o...read more

Developing a complex data analytics platform for a financial institution

• Designing and implementing a scalable architecture to handle large volumes of data

• Integrating multiple data sources and ensuring data accuracy and consistency

• Implementing complex algorithms for predictive analytics and machine learning

• Ensuring data security and compliance with regulatory requirements

• Collaborating with cross-functional teams includi...read more

To make an app secure, implement encryption, authentication, and authorization.

• Use encryption to protect sensitive data in transit and at rest

• Implement authentication to verify user identity

• Use authorization to control access to app features and data

• Regularly update and patch the app to address security vulnerabilities

• Conduct regular security audits and penetration testing

• Educate users on best security practices, such ...read more

Proguard is a tool that shrinks, optimizes and obfuscates Java code.

• Proguard is used to reduce the size of the code and make it run faster.

• It can also obfuscate the code to make it harder to reverse engineer.

• Proguard is commonly used in Android app development to reduce the size of the APK file.

• It works by analyzing the code and removing unused classes, fields, and methods.

• Proguard can also rename classes, fields, and ...read more

Image resolution can be decreased by compressing the image using algorithms like JPEG or PNG.

• Compression algorithms like JPEG or PNG can be used to decrease image resolution.

• The image can be resized to a smaller resolution.

• Cropping the image to remove unnecessary parts can also decrease resolution.

• Reducing the color depth of the image can also decrease resolution.

• The choice of method depends on the specific use case an...read more