Carelon Global Solutions Interview Questions, Process, and Tips

Q1. Oop concepts, java, java 8, multithreading, hibernate, spring boot
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Q1. Basic sql , dbms, os
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Q2. Oops, are asking in interview
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Q1. Java 8 spring boot microservices
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Q1. Your projects and microservices design patterns
Ans. 
I have experience designing and implementing microservices using various design patterns.
• Utilized design patterns like Singleton, Factory, and Observer for microservices architecture

• Implemented service discovery using tools like Eureka or Consul

• Used API Gateway pattern for routing and load balancing

• Employed Circuit Breaker pattern for fault tolerance and resilience

• Designed microservices to be loosely coupled and indepe
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Q1. Salary discussion and past project experience discussion and current project information.
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Reasoning and quantitative aptitude

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Q1. Difference between where and having in sql
Ans. 
WHERE is used to filter rows before grouping or aggregating, while HAVING is used to filter groups after grouping or aggregating.
• WHERE is used with SELECT, UPDATE, DELETE statements to filter rows based on a condition

• HAVING is used with GROUP BY clause to filter groups based on a condition

• WHERE is applied before grouping or aggregating data, HAVING is applied after grouping or aggregating data

• Example: SELECT * FROM tab...read more
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Q2. What do you know about unique keyword in sql
Ans. 
UNIQUE keyword in SQL is used to ensure that all values in a column are unique.
• Used in CREATE TABLE statement to define a column as unique

• Prevents duplicate values in the specified column

• Can be used with multiple columns to create composite unique keys
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Q3. Last one 1 coding question
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