Lenskart Softwaretest Engineer Interview Questions and Answers for Experienced

Q1. Print the nodes of a n-ary tree in an arc wise manner as seen from the outside.
Ans. 
Print nodes of n-ary tree in arc wise manner from outside
• Traverse the tree level by level from outside to inside

• Use a queue to keep track of nodes at each level

• Print the nodes at each level in a clockwise or anticlockwise manner
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1. PEAK ELEMENT QUESTION.
2. COIN DENOMINATION

Q1. Node JS internal
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Q2. Previous project discussion
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Q1. Design airline service.
Ans. 
Design an airline service for booking flights and managing reservations.
• Create a user-friendly website or mobile app for customers to search and book flights.

• Implement a secure payment system for online bookings.

• Develop a system for managing flight schedules, seat availability, and reservations.

• Include features for customers to check-in online, select seats, and view flight status.

• Offer loyalty programs and discounts f
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Resume walkthrough and 1 medium level DSA question.

Q1. Introduction about yourself and expectation
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Q1. IOS questions and architecture question about modularisation. From resume.
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Q2. Question Asked about memory management
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Q3. Question about modularisation and interface design
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60 mins - aptitude test, then followed by mcq's and 2 coding questions for total 2 hrs in mettl platform

Q1. Reverse elements in an array OOPS concepts Reverse LinkedList all with efficent time complexities Project related,Acid Properties
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Q1. General questions like where do you see yourself in next 5 years, why should we hire you etc...
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Design and code a parking lot application

Q1. Past work and digging around that. few changes in past work and how to implement them.
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Q1. How to ensure that there is no data corruption when data is being streamed and processed asynchronously
Ans. 
To ensure no data corruption during asynchronous streaming and processing, use data validation, error handling, and checksums.
• Implement data validation techniques to check the integrity of the streamed data.

• Handle errors and exceptions properly to prevent data corruption.

• Use checksums or hash functions to verify the integrity of the data.

• Implement reliable communication protocols like TCP/IP to ensure data integrity.

• Co...read more
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