Kyndryl Senior Technical Lead Interview Questions and Answers

Q1. Spring batch questions Questions related to asynch process
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Q2. Java 8 stream api questions
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Use java 8 to find the first repeated character in a given string

Q1. Fake Interview, Didn't expect this from virtusa
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Q2. FakeInterviews conducted, Didn;t expect this from virtusa
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Q3. Virtusa Scammers
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Q1. Microservices architechture, java8 questions
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Q1. Question related to angular, like data bindings, different types of directives, pipes
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Q1. Questions related to your tech stack. Coding questions. Difficulty level - Intermediate.
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Q1. Introduction. Technical questions. Scenario based questions.
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Q1. Introduction and salary related questions.
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Q1. Tell me about yourself and various situations
Ans. 
I am a seasoned Technical Lead with experience in leading teams, solving complex technical challenges, and driving project success.
• Led a team of developers in implementing a new software system for a client

• Resolved a critical production issue by quickly identifying the root cause and implementing a fix

• Collaborated with cross-functional teams to deliver projects on time and within budget
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Q1. Questions about Interfaces,, Abstract Classes, Multi-Threading, Parallel Programming concepts, SQL Server
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Q1. Questions about Design Patterns, SOLID Principles, Extension Methods, LINQ, Entity Framework
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Q1. Questions about current project and my roles and responsibilities, my salary structure, my aspirations whether I want to be Architect or just Team Lead.
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Q1. My CTC and ECTC, and asked for negotiation, to which I said yes and accepted the compensation they can offer to me. But still offer letter not released without giving any reason.
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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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