Bulbulshop Shopping Network Interview Questions and Answers

I was attended for technical f2f round for Android app developer, they asked to develop sample app with large json parsing in grid view. It's good and nice.

Q1. Once you successfully implemented coding, they will take technical f2f round. It will mainly in all topics of android.
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Was asked about a case study regarding cost and profit, interviewer was observing my logical thinking and approach towards the problem.
Basically they'll check if you are covering all aspects or not.

SQL easy to medium level

3 Coding question medium level

Q1. Asked 3 coding queston and some basis CS questions
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Had assignment for ror and react basic crud

Q1. Elevator problem in java
Ans. 
Elevator problem in Java
• Create an Elevator class with methods for moving up and down

• Use a Queue to keep track of the floors that need to be visited

• Implement a scheduling algorithm to determine the order of floor visits
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Q2. Horse race puzzle solution
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45 mins, Basic aptitude , comprehension and decision making questions

Q1. Questions related to databases, DSA - medium, SQL Queries
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Round 1 was coding test.

Q1. Round 2 was Technical
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Q2. Questions on TreeTraversal
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Q1. Round 3 was Technical round
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Q1. This was the final round
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Q1. How can we improve the performance of a Front End System
Ans. 
Improving Front End System Performance
• Optimize images and reduce their size

• Minimize HTTP requests and use caching

• Use lazy loading for images and videos

• Reduce the number of DOM elements

• Use a Content Delivery Network (CDN)

• Minimize the use of external scripts and plugins

• Use asynchronous loading for scripts

• Optimize CSS and JavaScript files

• Use browser caching

• Implement server-side rendering
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Q2. What is Event Loop and give an example on how it works.
Ans. 
Event Loop is a mechanism that allows JavaScript to handle multiple tasks simultaneously.
• Event Loop is a part of JavaScript runtime that continuously checks the call stack and the task queue.

• It prioritizes the tasks in the queue and pushes them to the call stack when it's empty.

• This allows JavaScript to handle I/O operations and other asynchronous tasks without blocking the main thread.

• Example: setTimeout() function ad...read more
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