dezerv Software Development Engineer 3 Interview Questions and Answers

Q1. LLD Question to design tic tac toe
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Q2. Resume discussion
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Q1. Design a book reader service such as kindle
Ans. 
Design a book reader service similar to Kindle
• Implement a user-friendly interface for browsing and purchasing books

• Include features like bookmarking, highlighting, and note-taking

• Support various file formats such as PDF, EPUB, and MOBI

• Provide options for customization like font size, background color, and reading progress tracking
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Q1. Movie booking System
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Q1. Design Splitwise
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Design Splitwise - an app for splitting expenses among friends
• Allow users to create groups and add expenses

• Track who owes how much to whom

• Support different currencies and payment methods

• Send notifications for pending payments

• Generate reports for easy settlement
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Q1. Movie booking system
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Q2. Cab booking system
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Q1. Design movie booking system
Ans. 
Design a movie booking system for users to book tickets for movies at various theaters.
• Create a database to store movie details, theater information, show timings, and seat availability.

• Develop a user-friendly interface for users to search for movies, select show timings, and book seats.

• Implement a payment gateway for users to make online payments for ticket bookings.

• Include features like seat selection, seat availabil...read more
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Q1. Design Google calendar
Ans. 
Design a Google calendar
• Allow users to create events and set reminders

• Provide options for recurring events

• Include sharing and collaboration features

• Integrate with other Google services like Gmail and Maps
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Q2. NO question asked in the second round
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Q1. Design LLD of Dream11
Ans. 
Design LLD of Dream11
• Use microservices architecture for scalability and flexibility

• Implement user authentication and authorization for secure access

• Utilize caching mechanisms to improve performance

• Design database schema for storing user data, teams, matches, and scores

• Include features like creating teams, joining contests, and viewing live scores
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DSA | LC Medium was asked

Q1. Typical LLD with API and DB schema
Ans. 
LLD stands for Low Level Design, which includes designing API and database schema for a software system.
• LLD involves detailed design of individual components/modules of a software system.

• API design includes defining endpoints, request/response formats, authentication mechanisms, etc.

• DB schema design involves defining tables, relationships, indexes, constraints, etc.

• LLD ensures that the system is scalable, maintainable,...read more
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