Rocket Software Interview Questions, Process, and Tips

Q1. Some theoretical questions, and scripts
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Q1. General discussion and a script, also asked some theoretical questions
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Q1. Authentican related questions - Spring security, Auth0, Jwt
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Q2. DB - differences between Postgresql and DB2, Transaction management by hibernate, Indexes
Ans. 
Postgresql and DB2 differences, transaction management by Hibernate, and indexes
• Postgresql is open-source, while DB2 is a commercial database

• Postgresql supports JSON data type, while DB2 does not

• Hibernate provides transaction management for both databases

• Indexes in Postgresql can be created using CREATE INDEX statement

• Indexes in DB2 can be created using CREATE INDEX or ALTER TABLE ADD INDEX statement
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Q3. Core Java - Serialization, Deserialization, Externalisation, Hash Collision, Parallel stream, etc..
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Q4. DSA - Writing programs for Binary search and Merge sort
Ans. 
Binary search and Merge sort are common algorithms used for searching and sorting arrays.
• Binary search is a divide and conquer algorithm that searches for a target value within a sorted array.

• Merge sort is a divide and conquer algorithm that recursively divides the array into two halves, sorts them, and then merges them back together.

• Binary search has a time complexity of O(log n) while Merge sort has a time complexity
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Q5. 3 leetcode problems
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Leetcode type BST, Queue, HashMaps

System Design interview

System architecture design.

Q1. Expect command in Linux
Ans. 
Expect command in Linux is used for automating interactive applications.
• Expect command is used to automate interactive applications in Linux.

• It can be used to automate tasks that require user input.

• Expect scripts can be written to handle various scenarios and responses.

• Example: Automating SSH login using Expect script.
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Q1. How to handle an angry customer?
Ans. 
Listen actively, empathize, stay calm, apologize, offer solutions, follow up.
• Listen actively to understand their concerns.

• Empathize with their situation and show understanding.

• Stay calm and composed, do not take their anger personally.

• Apologize for any inconvenience caused, even if it's not your fault.

• Offer solutions or alternatives to address their issue.

• Follow up to ensure the problem has been resolved to their satis
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