Kyndryl Technical Support Executive Interview Questions and Answers

Short basic algorithms test

Q1. Java OOPS Concept Questions, Multithreading
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Q1. Team Management Skills
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Q1. Scenario based technical question
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Q2. Code Test , write pseudo code for problem
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Scenario based question and pseudo code for technical problem

Q1. What are your salary expectations?
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Q1. Is live data is life cycle aware. If it's aware what does ViewModel do?
Ans. 
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.
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Q2. How does viewmodel survive when activity is destroyed on configuration?
Ans. 
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
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Q3. Advantage of mvp over mvc.
Ans. 
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
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Q4. How does SSL pinning works?
Ans. 
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
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Q5. How do you achieve data security when saving data persistanly.
Ans. 
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
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Q6. Where to save encription key?
Ans. 
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
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Q1. Good core understanding
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Q2. Architectural concept based
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Use java 8 to find the first repeated character in a given string

Q1. Design a restaurant management application
Ans. 
A restaurant management application to streamline operations and enhance customer experience.
• Features for managing menu items, orders, reservations, and staff schedules

• Integration with POS systems for seamless transactions

• Analytics dashboard for tracking sales, inventory, and customer feedback

• Mobile app for customers to place orders and make reservations

• Automated alerts for low inventory or high demand items
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Q1. Difference between design pattern and design principle
Ans. 
Design patterns are reusable solutions to common problems in software design, while design principles are guidelines to follow for good design practices.
• Design patterns provide specific solutions to recurring problems in software design, such as Singleton, Factory, and Observer patterns.

• Design principles are general guidelines that help in designing software that is maintainable, scalable, and flexible, such as SOLID p...read more
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