ZeMoSo Technologies Senior Software Engineer 2 Interview Questions and Answers

Coderbyte test on DSA and few Stack related MCQs.

Q1. DSA question related to Arrays, difficulty level medium.
Add your answer
Q2. Stack related questions like mine was MERN, so question on Nodejs, Database schema design, reactjs and Javascript basics.
Add your answer
Q3. This was taken by Flocareer, Zemoso hired them to evaluate me.
Add your answer

Q1. Discussed overall experience on different types of products and how I deal with those. And one coding question.
Add your answer

Q1. Again full interview on MERN STACK with one coding question on coderbyte.
Add your answer

Q1. Question on Spring boot backend coding problem
Add your answer
Q2. DSA medium level coding question
Add your answer
Q3. Questions on Maths and Logical Reasoning
Add your answer
Q4. Normal questions on development role
Add your answer

Q1. Java 8 features (Lambda, Streams, DateTime, Optional class etc.)
Add your answer
Q2. Core java (Multithreading, Collections working, Exception Handling etc.)
Add your answer
Q3. Designing an API for a Product table, basically CRUD operations
Ans. 
Designing a RESTful API for CRUD operations on a Product table
• Use HTTP methods like GET, POST, PUT, DELETE for CRUD operations

• Create endpoints like /products for listing all products, /products/{id} for specific product, etc.

• Use JSON format for request and response bodies

• Implement authentication and authorization mechanisms for secure access
Answered by AI
Add your answer
Q4. Spring boot all annotations and why they are used (underlying concepts)
Add your answer
Q5. Discussion on Response Status Code and how we can customise as per business requirements
Ans. 
Response status codes indicate the outcome of an HTTP request, customizable to meet specific business needs.
• 200 OK: Standard response for successful requests.

• 201 Created: Used when a new resource is created, e.g., after a POST request.

• 400 Bad Request: Indicates that the server cannot process the request due to client error.

• 401 Unauthorized: Indicates that authentication is required and has failed or not been provided.

• 4...read more
Answered by AI
Add your answer
Q6. A Math coding problem
Add your answer

There were 3, 4 questions asked in coding round. First, second one was easy followed by medium and Hard. Mostly questions were from Arrays, String, Dynamic Programming

Q1. Roles and Aspirations
Add your answer
Q2. Salary discussion
Add your answer

Q1. Java 8 features and explain with examples
Ans. 
Java 8 introduced significant features like Lambda expressions, Streams, and Optional to enhance productivity and code readability.
• Lambda Expressions: Enable functional programming by allowing you to pass behavior as a parameter. Example: (a, b) -> a + b.

• Streams API: Provides a way to process sequences of elements (collections) in a functional style. Example: list.stream().filter(x -> x > 10).collect(Collector...read more
Answered by AI
Add your answer
Q2. Promises and observables in angular
Ans. 
Promises and Observables are both used for handling asynchronous operations in Angular, but they have distinct characteristics.
• Promises are single-valued and can only resolve once, while Observables can emit multiple values over time.

• Example of a Promise: `let promise = new Promise((resolve, reject) => { resolve('Data received'); });`

• Example of an Observable: `import { Observable } from 'rxjs'; let observable = new ...read more
Answered by AI
Add your answer

It was a hacker rank test with a couple of DSA questions and a few MCQs related to core language.

Q1. DSA question to find out warmer temperatures from daily temperatures. Leetcode 739.
Ans. 
Find the number of days until a warmer temperature for each day in a list of daily temperatures.
• Use a stack to keep track of indices of temperatures.

• Iterate through the temperature array from left to right.

• For each temperature, pop from the stack until the current temperature is warmer.

• The difference in indices gives the number of days until a warmer temperature.

• Example: For temperatures [73, 74, 75, 71, 69, 72, 76, 73...read more
Answered by AI
Add your answer
Q2. Question on designing tables for a university with students and courses. Asked to write a select query on finding out students with course and grades with MySQL.
Add your answer
Q3. Frontend questions on react related to hooks
Add your answer
Q4. Internal working of Node.js and how node processes asynchronous requests
Ans. 
Node.js is a runtime environment that executes JavaScript code outside of a web browser, using an event-driven, non-blocking I/O model.
• Node.js uses the V8 JavaScript engine to execute code.

• It uses an event-driven architecture to handle asynchronous operations.

• Node.js uses a single-threaded event loop to process multiple requests concurrently.

• Callbacks are used to handle asynchronous operations in Node.js.

• Node.js provid...read more
Answered by AI
Add your answer

Q1. Discussion on salary and benefits. This was more of a casual discussion
Add your answer