ONPASSIVE Mongodb Database Administrator Interview Questions and Answers

Q1. Different types of No SQL DBs
Ans. 
NoSQL databases are non-relational databases that store and retrieve data in a non-tabular format.
• Document-oriented databases (MongoDB, Couchbase)

• Key-value stores (Redis, Riak)

• Column-family stores (Cassandra, HBase)

• Graph databases (Neo4j, OrientDB)
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Q2. Different types of scaling
Ans. 
Scaling refers to the process of increasing or decreasing the capacity of a system to handle more or less load.
• Vertical Scaling: Adding more resources to a single node

• Horizontal Scaling: Adding more nodes to a system

• Load Balancing: Distributing the load across multiple nodes

• Database Sharding: Splitting a database into smaller parts to distribute the load

• Caching: Storing frequently accessed data in memory for faster acc
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This was a very easy test. It can be crackable easily.

Q1. There is only 1 technical happened. Core java, angular, JUNIT
Ans. Basics of core java must, Angular if worked on it
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Q2. Junit test cases if worked previously.
Ans. 
Junit test cases should always be re-run to ensure code quality and prevent regression.
• Junit test cases should be run after every code change.

• Test cases should cover all possible scenarios and edge cases.

• Test cases should be automated to save time and ensure consistency.

• Test cases should be reviewed and updated regularly.

• Regression testing should be performed to ensure new changes do not break existing functionality.
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Q1. Salary discussion, Why this company kind of question.
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Reasoning Aptitude Test and some logical questions

Q1. Basic Java Questions of java 8, Collection, SpringBoot annotations, hibernate and jpa annotations,
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Q1. Java 8, Logical question
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