Kotak Mahindra Bank Senior Software Engineer Interview Questions and Answers

Q1. Difference between list and tuple
Ans. 
List is mutable, tuple is immutable in Python.
• List can be modified after creation, tuple cannot.

• List uses square brackets [], tuple uses parentheses ().

• List is used for collections of items that may change, tuple for fixed collections.

• Example: list - [1, 2, 3], tuple - (1, 2, 3)
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General knowledge and development skills and new things..

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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Q1. 1. Power BI, 2. SQL,
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Q2. 3. Azure and 4. Excel.
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Simple algorithm question about sorting

Q1. Algorith question about quick sort
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Q2. Nlonn run time of the sort
Ans. 
The time complexity of the quicksort algorithm is O(n log n).
• Quicksort has an average time complexity of O(n log n).

• The best case time complexity of quicksort is O(n log n) when the pivot element divides the array into two equal halves.

• The worst case time complexity of quicksort is O(n^2) when the pivot element is the smallest or largest element in the array.
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