ZeMoSo Technologies Interview Questions, Process, and Tips

Q1. Explain Node.js event driven architecture.
Ans. 
Node.js event driven architecture is a non-blocking, asynchronous model where events trigger callbacks.
• Node.js uses an event loop to handle asynchronous operations.

• Callbacks are registered for specific events and executed when the event occurs.

• Event emitters in Node.js trigger events that are handled by listeners.

• Example: Reading a file asynchronously in Node.js using fs module.
Answered by AI
Add your answer

Q1. DSA question, JavaScript questions, node.js, database and cloud
Add your answer

Q1. Code optimisation
Add your answer

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

Given a list of integer find the longest increase sequence

Q1. Given a list of integer find the first non repeating integer using stream API of Java 8.
Ans. 
Find the first non-repeating integer in a list using Java 8 stream API.
• Use Java 8 stream API to group integers by count

• Filter out integers with count greater than 1

• Return the first non-repeating integer
Answered by AI
Add your answer
Q2. Questions on core java like how internationally string works, hashmap etc And questions on database like what is indexing How to optimize SQL queries etc
Add your answer

Q1. Given a Map of fruits with there price as a key value pair respectively, find the fruit whose price is maximum using Java 8 Stream API.
Ans. 
Using Java 8 Stream API to find the fruit with maximum price in a Map of fruits.
• Use entrySet() method to get a stream of key-value pairs from the Map.

• Use max() method with Comparator.comparing() to find the entry with maximum price.

• Extract the key (fruit) from the entry with maximum price.
Answered by AI
Add your answer
Q2. Write a program to check whether the parenthesis are properly balanced or not, means for every opening brace these should be a closing brace present.
Ans. 
Program to check if parenthesis are properly balanced
• Use a stack data structure to keep track of opening parenthesis

• Iterate through the input string and push opening parenthesis onto the stack

• When a closing parenthesis is encountered, pop from the stack and check if it matches the corresponding opening parenthesis

• If stack is empty at the end and all parenthesis are matched, then the input has properly balanced parenthe
Answered by AI
Add your answer
Q3. Questions on core Java, Spring Boot, JPA, and Microservices you should have strong foundation in these topics questions asked like 1) what is API gateway 2) how 2 services communicate with eachother 3) ...read more
Add your answer

Q1. DSA probelms and java oops concepts
Add your answer

Q1. DSA JAVA, SRINGBOOT - DESIGN PATTERNS
Add your answer

Q1. HR discussion on how the company works and hr explained the work culture. Salary discussion and benefit
Add your answer

Q1. Based on nodejs and expressjs
Add your answer
Q2. Based on mongodb
Add your answer

Q1. Advanced knowledge on nodejs, expressjs, mongodb and aws
Add your answer
Q2. 2 coding questions
Add your answer

Q1. Salary discussion
Add your answer

Coding test includes 2 codes and some mcq questions

Q1. Introduce yourself and project
Ans. 
I am a software engineer with experience in developing web applications using Java and JavaScript.
• Experienced in Java and JavaScript programming languages

• Developed web applications using Spring Boot and React

• Familiar with Agile development methodologies
Answered by AI
Add your answer
Q2. Coding questions
Add your answer

Q1. Project pverview
Add your answer
Q2. Basic technical questions
Add your answer

2 Coding questions and Java & Spring Boot MCQs
Coding questions were on Arrays, File System in Java.

Q1. Convert a String into sub-strings based on the number of given rows in a zig-zag pattern and display as a single string P A H N I/P: "paypalishiring...read more
Ans. 
Convert a given string into sub-strings based on the number of rows in a zig-zag pattern and display as a single string.
• Create an array of strings with the number of rows specified

• Iterate through the input string and distribute characters in a zig-zag pattern

• Concatenate the sub-strings row by row to form the final output string
Answered by AI
Add your answer

Q1. Count the continuous unique character from given string "aaaaBbbbCDEaAb", O/P: a4 B4 C1 D1 E1 a2 b2
Ans. 
Count the continuous unique characters in a given string.
• Iterate through the string and keep track of the current character and its count

• If the current character is different from the previous one, print the count and reset it

• Handle both uppercase and lowercase characters separately
Answered by AI
Add your answer