NTT Data Information Processing Services Principal Quality Analyst Interview Questions and Answers

Apptitude + java (20+40) Technical had all the framework related having ORM and Webservices questions

Q1. About yourself and Project
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Q2. Microservices traffic handing
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Q1. Microservice design principles
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Microservice design principles focus on modularity, scalability, resilience, and autonomy.
• Decompose the application into small, independent services

• Design services around business capabilities

• Use lightweight communication protocols like HTTP or messaging queues

• Ensure each service is responsible for its own data storage

• Implement fault tolerance and graceful degradation

• Automate testing and deployment processes
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Q2. MongoDB / RabbitMQ cluster setup and programming implementation
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Q1. General project discussion
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Q1. Success factor related question accessing general fitment
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Q1. Related to my past work
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Related various security domains

Q1. Related to various security domains
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Q1. Related to design of distributed systems
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Q1. Related to design of distributed systems
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50 questions in 60 minutes which contain MCQ's and javascript questions

Q1. Questions regarding callstack, reducer actions etc
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Problem Solving and basic domain specific questions in JS and react native

Q1. React native new architecture
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Q2. Programming and problem solving
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Critical thinking , analytical skills, observation,

Q1. How will you prevent docker container from assuming root user role?
Ans. 
To prevent a docker container from assuming root user role, use non-root users, drop privileges, and utilize user namespaces.
• Create a non-root user in the Dockerfile with appropriate permissions

• Use the USER instruction in the Dockerfile to switch to the non-root user

• Utilize user namespaces to map the container's root user to a non-root user on the host system

• Drop privileges within the container to limit the capabilitie
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Q2. Difference between Kafka & rabbitMQ
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Kafka is a distributed streaming platform while RabbitMQ is a message broker.
• Kafka is designed for high-throughput, fault-tolerant, real-time data processing.

• RabbitMQ is a traditional message broker that follows the AMQP protocol.

• Kafka uses a publish-subscribe model while RabbitMQ uses a message queue model.

• Kafka is horizontally scalable and provides strong durability guarantees.

• RabbitMQ supports multiple messaging pro...read more
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Q3. Does java Streams API use fail-safe or fail-fast iterator
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Java Streams API uses fail-fast iterator
• Java Streams API uses fail-fast iterator, which throws ConcurrentModificationException if the collection is modified while iterating

• Fail-fast iterators immediately throw an exception if the collection is modified during iteration

• This behavior helps in detecting and preventing concurrent modification issues
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