Wipro Software Engineer2 Interview Questions and Answers

They just asked about my previous experience and questions from my resume

Q1. Bsod , how to handle angry customer ,
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Q1. Difference between SQL and NoSQL databases?
Ans. 
SQL databases are relational databases with structured data and predefined schema, while NoSQL databases are non-relational databases with flexible schema and unstructured data.
• SQL databases use structured query language for defining and manipulating data, while NoSQL databases use different query languages or APIs.

• SQL databases are table-based, with rows and columns, while NoSQL databases can be document-based, key-va...read more
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Q2. What are the methods for enabling communication between microservices?
Ans. 
Methods for enabling communication between microservices
• RESTful APIs

• Message queues (e.g. RabbitMQ, Kafka)

• gRPC (Google Remote Procedure Call)

• Service mesh (e.g. Istio, Linkerd)

• Event-driven architecture (e.g. using Apache Kafka)
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Q1. Daemon thread in java
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Daemon thread is a low priority thread that runs in the background and does not prevent the JVM from exiting.
• Daemon threads are used for tasks that do not require user interaction or continuous execution.

• They are automatically terminated when all non-daemon threads have finished.

• Set a thread as daemon using setDaemon(true) method before starting it.

• Example: Thread t = new Thread(); t.setDaemon(true); t.start();
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