CyberArk Senior Data Scientist Interview Questions and Answers

Online test was hackerrank was was og avg difficulty

Q1. Second round was of 1 hr of which 30 mins divided into understanding my current project architecture. And second half was on what i worked and how I worked and what skills I have
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Assignment was straightforward which could be done using trie. Did it in 1/6th throughout time for given queries then mentioned allowed still no reply. Keep on asking engineering manager and hr to which they replied not upto the mark.

Q1. How to check a number is power of 2
Ans. 
To check if a number is a power of 2, we can use bitwise operations.
• A power of 2 has only one bit set to 1, so we can use the bitwise AND operator to check if the number is a power of 2.

• If n is a power of 2, then n & (n-1) will be 0.

• For example, 8 (1000 in binary) is a power of 2, and 8 & 7 (0111 in binary) is 0.
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Q2. Sort a stack without using another data structure
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Sort a stack without using another data structure
• Use recursion to pop the top element and insert it at the bottom of the remaining stack

• Repeat until the stack is sorted in ascending order

• Time complexity: O(n^2), space complexity: O(n) due to recursion
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Q3. Check weather array have continuous increasing than decreasing value
Ans. 
Check if array has continuous increasing and decreasing values
• Loop through the array and check if each element is greater than the previous one

• Once you find the maximum element, check if the remaining elements are in decreasing order

• If yes, return true else false
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Q1. Design a cricinfo (LLD)
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Design a cricinfo (LLD)
• Identify the entities: players, teams, matches, scorecards, tournaments, etc.

• Define the relationships between entities

• Create a database schema to store the data

• Implement APIs to fetch and update data

• Design a UI to display the information

• Consider scalability and performance

• Ensure data security and privacy
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Q1. Share details of your previous job.
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Q2. Why should we hire you?
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Q3. What are your strengths and weaknesses?
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Q1. L2/L3 layer questions
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Q1. Questions related to python coding .
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Q2. Questions related to work u have done . And coding
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Q1. Questions about networking , security profile
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Q1. About networking protocols and coding rounds
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Q1. Datatypes in python
Ans. 
Python has various datatypes like int, float, str, list, tuple, dict, set, bool.
• int: whole numbers

• float: decimal numbers

• str: text

• list: ordered collection

• tuple: ordered, immutable collection

• dict: key-value pairs

• set: unordered collection with no duplicates

• bool: True or False values
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Q2. Diffrence between django and flask
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Django is a high-level Python web framework that encourages rapid development and clean, pragmatic design. Flask is a lightweight WSGI web application framework.
• Django is a full-featured framework with built-in ORM, admin panel, and authentication system.

• Flask is a microframework that is more lightweight and flexible, allowing developers to choose their own tools and libraries.

• Django follows the 'batteries included' ph...read more
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Q1. Interviewer was not aware about the concepts in C++.. Asked abstract class in C++ and singly linked list implementation. Don't go for f2f interviews which they schedule on weekends interviewers are rude an...read more
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Q1. Questions are regarding Springboot
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Q1. Windows OS related
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Q1. Work experience related
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Q1. Managerial+ Behavioural
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Q1. Data Structure, Hashing
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