Mr Cooper Fullstack Java Developer Interview Questions and Answers

Q1. Design patterns that you have followed in your past projects.
Ans. 
I have followed the MVC, Singleton, and Factory design patterns in my past projects.
• MVC pattern for separating concerns and improving maintainability

• Singleton pattern for ensuring only one instance of a class is created

• Factory pattern for creating objects without exposing the instantiation logic
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Q2. How to secure the applications?
Ans. 
Applications can be secured by implementing various security measures such as authentication, authorization, encryption, and regular updates.
• Implement strong authentication mechanisms such as multi-factor authentication

• Use authorization to restrict access to sensitive data and functionalities

• Encrypt sensitive data both in transit and at rest

• Regularly update the application and its dependencies to patch security vulnera...read more
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Mcq related to dsa ,oops

Q1. Just basic oops questions about polymorphism,inheritance
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Q1. What is your current role ?
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Q2. Why are you looking for a job change?
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Q1. Python based list iteration, SQL join based questions
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Q1. What are the project you have worked upon ?
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Asked about a case study on whom to give a loan among 1000 customers

Q1. LRU cache design
Ans. 
LRU cache design involves maintaining a cache with limited capacity and removing the least recently used item when the cache is full.
• Use a doubly linked list to maintain the order of items based on their usage.

• Implement a hash map for fast access to items in the cache.

• When a new item is accessed, move it to the front of the linked list to mark it as the most recently used.

• When the cache is full, remove the item at the ...read more
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Q2. Current project
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