Mphasis interview question

hey asked me to explain the entire flow of how a Spring Boot REST API handles a request from the controller to the database." Why it stands out: Tests depth of understanding in real-world applications. "They asked me to write Java code to remove duplicates from a list without using Set." Why it stands out: Checks both logic and coding style. "They asked how I would make a microservice secure using Spring Security with JWT." Why it stands out: Shows knowledge of authentication, security—a key in real-time systems. "They gave me a scenario where one service is down, and asked how to ensure the whole application doesn't fail." Why it stands out: Tests real-time problem solving with fallback, circuit breakers, etc. "They asked me to explain how a HashMap works internally in Java." Why it stands out: A classic mid-level question that dives into data structure