Chalo Software Development Engineer II Interview Questions and Answers

Q1. DSA - level order traversal, sliding window.
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Q1. Atomic transaction in distributed system
Ans. 
Atomic transactions ensure that all operations in a transaction are completed successfully or none at all in a distributed system.
• Atomic transactions guarantee that all operations within a transaction are either all successful or all rolled back.

• In distributed systems, atomic transactions are crucial for maintaining data consistency across multiple nodes.

• ACID properties (Atomicity, Consistency, Isolation, Durability) a...read more
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Computer Fundamentals

Q1. Flatten a binary tree
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Flatten a binary tree by converting it into a linked list in-place.
• Use a recursive approach to flatten the binary tree.

• Traverse the tree in a pre-order manner and keep track of the previous node.

• Set the left child of each node to null and the right child to the next node in the linked list.

• Example: Input: 1 -> 2 -> 5 -> 3 -> 4 -> null, Output: 1 -> null -> 2 -> null -> 3 -> null -> 4 -> null -> 5 -> null
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Solving normal Puzzles to test aptitude.

Sample app was asked to create.

It was good, actually they asked parentheses balance question, Getting duplicate values , pallindrome question and also Target sum with O(n) TC.

Q1. Basic questions
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Q2. Tell Me about yourself?
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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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- simple basic ios questions

Q1. Asked DSA array questions
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Kadance algorithm and find the middle of the linklist

More on java and Python based coding questions

Q1. Behavioural questions were asked
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Q2. What are your expectations from this job
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Q3. What are your plans ahead
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Q4. Where do you see yourself in 5 years ahead
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