Uploaded August 2026 | Updated September 2026, 3 weeks ago
A lot of C# interview questions sound simple, but we often get them wrong because we don't have the right mental model behind them.
In this video, we’ll understand how to think about concepts like DI, loose coupling, callbacks, delegates and events so you can explain them naturally in an interview and not just repeat definitions.
Also, Tomorrow (Thursday) from 9 PM to 10 PM IST (and also next Thursday at the same time), we will be covering the Top Microservices Interview Questions with demos.
Below are the Top 25 Microservices Interview Questions, along with the company names where these questions were asked.
1. What are Microservices? Explain Microservices architecture. (TCS, INFY, CTS, CAP, WIP, VIR, LTI, ACN, GL)
2. What is the difference between Monolithic and Microservices architecture? (TCS, INFY, CTS, CAP, WIP, VIR, GL, LTI, PER)
3. How do Microservices communicate with each other? (CTS, GL, VIR, EPAM, DEL, TCS)
4. Synchronous vs Asynchronous communication in Microservices? (CTS, EPAM, DEL, VIR)
5. REST API vs Message Queue/Event Bus — when would you use each? (VIR, CTS, GL)
6. What are the advantages and disadvantages/challenges of Microservices? (INFY, CTS, VIR, CAP)
7. How do you identify or define Microservice boundaries? (VIR, EPAM, DEL)
8. What is Domain-Driven Design (DDD), and how is it related to Microservices? (EPAM, DEL, PS)
9. What is a Bounded Context and how does it help define Microservices? (EPAM, TW, DEL)
10. What is an API Gateway and why is it required? (CTS, TCS, ACN, EPAM, CAP)
11. What is Service Discovery / Service Registry? (CTS, INFY, EPAM, CAP)
12. How do you handle distributed transactions in Microservices? (DEL, TCS, VIR, CTS, EPAM)
13. What is the Saga Pattern? (EPAM, DEL, ACN, CTS, VIR)
14. Saga Choreography vs Orchestration? (EPAM, DEL, ACN, CTS)
15. What is CQRS and why/when would you use it? (EPAM, DEL, PS, ACN)
16. How do you maintain data consistency / eventual consistency across Microservices? (CTS, GL, EPAM, DEL)
17. How do you handle failures and fault tolerance in Microservices? (GL, CTS, INFY, EPAM)
18. Explain Retry and Circuit Breaker patterns. (INFY, CTS, EPAM, ACN, CAP)
19. How do you handle duplicate messages / idempotency / retry failures? (CTS, EPAM, DEL)
20. How do you secure/authenticate Microservices? Explain JWT/OAuth. (CTS, HEX, ACN, DEL)
21. How do you deploy Microservices? (INFY, CAP, VIR, CTS)
22. How do Docker and Kubernetes help Microservices? (CTS, INFY, CAP, TCS)
23. How do you implement logging and monitoring in Microservices? (INFY, EPAM, CTS, ACN)
24. How do you migrate a Monolithic application to Microservices? (CTS, VIR, INFY)
25. What challenges have you faced while working with Microservices? (VIR, CTS, EPAM, DEL)
All these questions have been collected from real interview experiences shared on our WhatsApp C# Developer Community
🔗 whatsapp.questpond.com
🌐 questpond.com
Do join the group. It is one of the largest C# developer community networks, especially when it comes to job search and interview preparation.
#
A lot of C# interview questions sound simple, but we often get them wrong because we don't have the right mental model behind them.
In this video, we’ll understand how to think about concepts like DI, loose coupling, callbacks, delegates and events so you can explain them naturally in an interview and not just repeat definitions.
Also, Tomorrow (Thursday) from 9 PM to 10 PM IST (and also next Thursday at the same time), we will be covering the Top Microservices Interview Questions with demos.
Below are the Top 25 Microservices Interview Questions, along with the company names where these questions were asked.
1. What are Microservices? Explain Microservices architecture. (TCS, INFY, CTS, CAP, WIP, VIR, LTI, ACN, GL)
2. What is the difference between Monolithic and Microservices architecture? (TCS, INFY, CTS, CAP, WIP, VIR, GL, LTI, PER)
3. How do Microservices communicate with each other? (CTS, GL, VIR, EPAM, DEL, TCS)
4. Synchronous vs Asynchronous communication in Microservices? (CTS, EPAM, DEL, VIR)
5. REST API vs Message Queue/Event Bus — when would you use each? (VIR, CTS, GL)
6. What are the advantages and disadvantages/challenges of Microservices? (INFY, CTS, VIR, CAP)
7. How do you identify or define Microservice boundaries? (VIR, EPAM, DEL)
8. What is Domain-Driven Design (DDD), and how is it related to Microservices? (EPAM, DEL, PS)
9. What is a Bounded Context and how does it help define Microservices? (EPAM, TW, DEL)
10. What is an API Gateway and why is it required? (CTS, TCS, ACN, EPAM, CAP)
11. What is Service Discovery / Service Registry? (CTS, INFY, EPAM, CAP)
12. How do you handle distributed transactions in Microservices? (DEL, TCS, VIR, CTS, EPAM)
13. What is the Saga Pattern? (EPAM, DEL, ACN, CTS, VIR)
14. Saga Choreography vs Orchestration? (EPAM, DEL, ACN, CTS)
15. What is CQRS and why/when would you use it? (EPAM, DEL, PS, ACN)
16. How do you maintain data consistency / eventual consistency across Microservices? (CTS, GL, EPAM, DEL)
17. How do you handle failures and fault tolerance in Microservices? (GL, CTS, INFY, EPAM)
18. Explain Retry and Circuit Breaker patterns. (INFY, CTS, EPAM, ACN, CAP)
19. How do you handle duplicate messages / idempotency / retry failures? (CTS, EPAM, DEL)
20. How do you secure/authenticate Microservices? Explain JWT/OAuth. (CTS, HEX, ACN, DEL)
21. How do you deploy Microservices? (INFY, CAP, VIR, CTS)
22. How do Docker and Kubernetes help Microservices? (CTS, INFY, CAP, TCS)
23. How do you implement logging and monitoring in Microservices? (INFY, EPAM, CTS, ACN)
24. How do you migrate a Monolithic application to Microservices? (CTS, VIR, INFY)
25. What challenges have you faced while working with Microservices? (VIR, CTS, EPAM, DEL)
All these questions have been collected from real interview experiences shared on our WhatsApp C# Developer Community
🔗 whatsapp.questpond.com
🌐 questpond.com
Do join the group. It is one of the largest C# developer community networks, especially when it comes to job search and interview preparation.
#
