EXL Service Lead Data Engineer Interview Questions and Answers

Array,binary search, Aptitude

Q1. Coding Questions, java, Web development
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Q1. Just normal Questions
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First round was online coding round, second was coding in interview infornt of panel, third was DSA+basic Database questions

Q1. Basics of sql and some coding questions
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Q2. Data structures
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Q1. Putin arrays strings
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Basic ds algo round with questions asked around arrays strings

Q1. Minimum in Rotated Sorted array
Ans. 
Find the minimum element in a rotated sorted array.
• Perform binary search to find the pivot point where the array is rotated.

• Compare the element at pivot point to the first element to determine which half to search for the minimum.

• Continue binary search in the appropriate half to find the minimum element.
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Q2. API and DB Schema for Instagram based application.
Ans. 
API for Instagram application to interact with user data and DB schema to store user information and posts.
• API endpoints for user authentication, posting photos, liking photos, following users, etc.

• DB schema with tables for users, posts, comments, likes, followers, etc.

• Example API endpoint: /users/{userId}/posts to retrieve all posts by a specific user.

• Example DB schema: Users table with columns for username, email, pr
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Q1. Resume introspection, AWS, K8s
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