NCR Voyix Technical Architect Interview Questions and Answers for Experienced

Q1. Well prepare for AD ,GPO and troubleshooting. Networking requirements for migration AD security concepts
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Q2. DC locator and LDAP records
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Q3. LDAP and DNS records
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Q4. Kerberos knowledge
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Q1. Dependency Injection
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Q1. No questions as such
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Q2. No questions as such, don't remember
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Q1. Does the resume match JD skills?
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Q2. Availability and CTC
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Q1. Oops questions (interface, SOLID principles, Singleton and other patterns), calling static methods and classes
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Q2. Web dev - caching, sliding expiration, coding best practices, Restful services, javascript knowledge, closures, js frameworks
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Q3. Dot net core, garbage collection, anonymous functions, repository pattern / orm, bridge and router patterns, multithreading, signalling
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Q4. Security, authentication and authorisation, PKI, oauth Performance and scalability, connection pooling, dh tuning Extensibility, reliability, maintainability Coding best practices for good architecture, mi...read more
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Q1. Similar to round 2 by senior person and less questions. Scenario based Sometimes
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Q2. Team work, conflict management, client management,
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Q1. Strengths and weaknesses Visas, travel history CTC negotiation Joining dates
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Q1. Describe 5 non functional requirements
Ans. 
Non functional requirements are criteria that specify how a system should behave, rather than what it should do.
• Performance - system should respond within 2 seconds for all user interactions

• Scalability - system should be able to handle 1000 concurrent users

• Reliability - system should have a 99.99% uptime

• Security - system should encrypt all sensitive data

• Usability - system should have a user-friendly interface
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Q2. How will you improve performance of legacy app which has to work with your latest microservice.
Ans. 
Improve legacy app performance by optimizing code, implementing caching, and scaling resources.
• Optimize code by identifying and removing bottlenecks

• Implement caching to reduce database calls and improve response time

• Scale resources by using containers or serverless architecture

• Use asynchronous processing for long-running tasks

• Upgrade hardware or infrastructure if necessary
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Q1. Explain security in microservices
Ans. 
Security in microservices involves implementing authentication, authorization, encryption, and monitoring to protect data and services.
• Implement authentication and authorization mechanisms to control access to microservices.

• Use encryption to secure communication between microservices and external clients.

• Implement monitoring and logging to detect and respond to security incidents.

• Consider using API gateways for central...read more
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Q2. Describe microservices architecture for a wealth management app
Ans. 
Microservices architecture for a wealth management app involves breaking down the application into smaller, independent services.
• Each microservice focuses on a specific business function, such as client onboarding, portfolio management, or reporting.

• Services communicate through APIs, allowing for flexibility and scalability.

• Each microservice can be developed, deployed, and scaled independently, leading to faster develo...read more
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