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Cogent E Services Node JS Developer Interview Questions and Answers

Updated 16 Aug 2024

Cogent E Services Node JS Developer Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Bnine don’t havecany
  • Q2. No e don’t have no e
Round 2 - Aptitude Test 

None of the following above to

Round 3 - Technical 

(2 Questions)

  • Q1. None of the folks for you
  • Q2. None of the following
Round 4 - Coding Test 

None of the follicle questions

Round 5 - Coding Test 

None of the following above

Round 6 - Assignment 

None of the folk above yo

Interview Preparation Tips

Interview preparation tips for other job seekers - None of the following above idk

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What is node.js
  • Q2. What is the event loop in Node.js?
Interview experience
1
Bad
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
No response

I was interviewed in Jan 2025.

Round 1 - Group Discussion 

Programming questions related to Python and React.

Round 2 - Group Discussion 

Programmatical problem related to Python and React

Round 3 - HR 

(1 Question)

  • Q1. Salary Discussion
Round 4 - Aptitude Test 

Programming Problems related to react and python.

Round 5 - Technical 

(1 Question)

  • Q1. Object Oriented Programming, Memory Management, Multiprocessing, multithreading, GIL, React Components
Round 6 - Technical 

(1 Question)

  • Q1. Object Oriented Programming, GIL, Multi threading, multiprocessing, React Component, Shallow Copy, Deep Copy
Round 7 - Technical 

(1 Question)

  • Q1. Object Oriented Programming, GIL, Multi threading, multiprocessing, React Component, Shallow Copy, Deep Copy
Round 8 - Technical 

(1 Question)

  • Q1. Object Oriented Programming, GIL, Multi threading, multiprocessing, React Component, Shallow Copy, Deep Copy
Round 9 - One-on-one 

(1 Question)

  • Q1. Object Oriented Programming, GIL, Multi threading, multiprocessing, React Component, Shallow Copy, Deep Copy, Django ORM, Class Inheritance

Interview Preparation Tips

Interview preparation tips for other job seekers - In the name of the client Round, the internal team will contact you to conduct interview calls known as Preparation Call Round before the Client Round, aimed at creating a positive impression for the client. Typically, no additional rounds follow the HR round, but they conducted five more rounds while merely reiterating the aforementioned details, which led me to cancel my own job application.
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
No response

I applied via Naukri.com and was interviewed in Apr 2024. There were 2 interview rounds.

Round 1 - Technical 

(3 Questions)

  • Q1. Interfaces and stream coding questions were asked
  • Q2. New features added in Java 11,java 8 features, so many questions from oops, Hashmap coding questions were asked, annotations of spring boot were asked
  • Q3. Dependency injection
Round 2 - Technical 

(1 Question)

  • Q1. Same questions but they were asked about every topic in detail, better to prepare all the topics in detail.

Interview Preparation Tips

Interview preparation tips for other job seekers - There were 4 rounds in EY and even after giving all the rounds and doing well there was the negative response I was not able to understand and the process took a month.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. Explain Encapsulation
  • Ans. 

    Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

    • Encapsulation helps in hiding the internal state of an object and only exposing necessary functionalities.

    • It allows for better control over the data by preventing direct access from outside the class.

    • Encapsulation also helps in achieving data abstraction and information hiding.

    • Example: In a class representing a car, th...

  • Answered by AI
  • Q2. How to call rest API
  • Ans. 

    To call a REST API, you can use tools like Postman or code in languages like JavaScript or Python.

    • Use tools like Postman to make HTTP requests to the API endpoints

    • In programming languages like JavaScript, use libraries like Axios or Fetch to make API calls

    • Include necessary headers, parameters, and authentication tokens in the request

    • Handle the response data accordingly, whether it's JSON, XML, or other formats

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare Sprig MVC, Spring boot and API

Skills evaluated in this interview

Interview experience
1
Bad
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Dec 2023. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. About experience previous project technical design
  • Q2. I have hands good exposure
Round 2 - Group Discussion 

How to handle the project amd team members and how will take care the code analysis

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in Jan 2023. There were 4 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Aptitude Test 

It was just a typical logical reasoning and aptitude MCQ test

Round 3 - Coding Test 

There were 2 coding questions and you can select any language for solving it. The test was online

Round 4 - Technical 

(13 Questions)

  • Q1. He simply asked me which coding language I prefer and why ? (Mine was C++)
  • Q2. Difference between C and C++?
  • Ans. 

    C is a procedural programming language while C++ is an object-oriented programming language.

    • C is a procedural programming language, while C++ supports both procedural and object-oriented programming.

    • C does not have classes and objects, while C++ does.

    • C does not support function overloading, while C++ does.

    • C does not have exception handling, while C++ does.

    • C does not have namespaces, while C++ does.

  • Answered by AI
  • Q3. What is Object oriented programming?
  • Ans. 

    Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.

    • Objects are instances of classes, which define the structure and behavior of the objects.

    • Encapsulation, inheritance, and polymorphism are key principles of object oriented programming.

    • Example: Inheritance allows a class to inherit properties and methods from another class.

    • Example: Encapsulation hides t...

  • Answered by AI
  • Q4. What are the 4 pillars of OOPs?
  • Ans. 

    Encapsulation, Inheritance, Polymorphism, Abstraction

    • Encapsulation: Bundling data and methods that operate on the data into a single unit

    • Inheritance: Ability of a class to inherit properties and behavior from another class

    • Polymorphism: Ability to present the same interface for different data types

    • Abstraction: Hiding the complex implementation details and showing only the necessary features

  • Answered by AI
  • Q5. Write down code implementing all 4 pillars of OOPs.
  • Ans. 

    Code implementing all 4 pillars of OOPs

    • Encapsulation: Encapsulate data within classes and provide public methods to access and modify the data.

    • Inheritance: Create a hierarchy of classes where child classes inherit attributes and methods from parent classes.

    • Polymorphism: Allow objects of different classes to be treated as objects of a common superclass through method overriding and overloading.

    • Abstraction: Hide complex ...

  • Answered by AI
  • Q6. Difference between Stacks and Queues?
  • Ans. 

    Stacks are Last In First Out (LIFO) data structures, while Queues are First In First Out (FIFO) data structures.

    • Stacks: Elements are added and removed from the same end, like a stack of plates. Example: Undo feature in text editors.

    • Queues: Elements are added at the rear and removed from the front, like a line of people waiting. Example: Print queue in a printer.

  • Answered by AI
  • Q7. Write a code to find the 2nd largest element in an array.
  • Ans. 

    Code to find the 2nd largest element in an array

    • Sort the array in descending order and return the element at index 1

    • Iterate through the array and keep track of the two largest elements

    • Handle edge cases like arrays with less than 2 elements

  • Answered by AI
  • Q8. What is merge sort and its Algorithm ?
  • Ans. 

    Merge sort is a divide and conquer algorithm that divides the input array into two halves, sorts them recursively, and then merges them.

    • Divide the input array into two halves

    • Recursively sort each half

    • Merge the sorted halves back together

  • Answered by AI
  • Q9. What is DBMS and RDBMS and difference between them?
  • Ans. 

    DBMS stands for Database Management System, while RDBMS stands for Relational Database Management System. RDBMS is a type of DBMS.

    • DBMS is a software system that allows users to define, create, maintain and control access to the database.

    • RDBMS is a type of DBMS that stores data in a structured format using tables with rows and columns.

    • RDBMS enforces a set of rules called ACID properties to ensure data integrity, while D...

  • Answered by AI
  • Q10. What is SQL and who its different from mySQL?
  • Ans. 

    SQL is a standard language for managing databases, while MySQL is a specific open-source relational database management system.

    • SQL stands for Structured Query Language and is used to communicate with databases.

    • SQL is a standard language that can be used with various database management systems.

    • MySQL is a specific open-source relational database management system that uses SQL.

    • MySQL is one of the most popular database m...

  • Answered by AI
  • Q11. Difference between Delete, Truncate and Drop?
  • Ans. 

    Delete removes specific rows from a table, Truncate removes all rows from a table, and Drop removes the table itself.

    • Delete is a DML command that removes specific rows from a table based on a condition.

    • Truncate is a DDL command that removes all rows from a table but keeps the table structure.

    • Drop is a DDL command that removes the entire table along with its structure.

  • Answered by AI
  • Q12. Different kind of Joins in DBMS ?
  • Ans. 

    Different types of joins in DBMS include inner join, outer join, left join, right join, and full join.

    • Inner join: Returns rows when there is a match in both tables.

    • Outer join: Returns all rows from one table and only matching rows from the other table.

    • Left join: Returns all rows from the left table and the matched rows from the right table.

    • Right join: Returns all rows from the right table and the matched rows from the ...

  • Answered by AI
  • Q13. And at last 2 to 3 SQL queries. They were not that hard, Just basic queries.

Interview Preparation Tips

Interview preparation tips for other job seekers - Well be prepared with DSA,OOPs and DBMS concept. If you don't know BST or Graphs or Heaps that well, no problem just be confident. Most of the times they don't ask anything more that linked list.
If you don't know the answer of a coding question (NOTE: not a theoretical question) try for sometime to come up with the solution and while thinking keep saying your approach out loud to the interview and if after taking 1 to 2 mins you still don't know just say, Sorry I can't recall it right now but I will definitely get to it after the interview. Don't use this approach for theoretical questions, Either you have an answer to that or not.
Never Beat around the bush, be specific and to the point.

And at last, I just wanna say that passing an interview needs 40% skill, 20% communication, 20% confidence, 10% mood of the interview and 10% is luck.

Why I am saying mood of the interview and luck????
In my case, I was not selected for the final HR round. First of all, in all 137 students selected for the technical interview, my name was at 111 and randomly they called the first student for the interview and it was me. So that's luck.
OK after I entered my interviewer cabin, I saw a look of aggression on my interviewers face. We didn't smiled once during my 50min interview. He didn't even asked me to introduce myself.

He asked me 15 questions in total and I correctly answers 10 of them to the point and for the rest 5 I explained my approach to them.
Still I got rejected, and one of my friend who was answered like 2 questions out of 10 got selected because his interviewer was different. (NOTE: I am really happy for my friend, He is like my best buddy and my only well wisher that I know about).

So yeah just prepare well and be confident and even if things go south and you gave your best, just think that today was not your day and just move on.

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed in Oct 2023. There were 2 interview rounds.

Round 1 - Aptitude Test 

Cat level maths are to be solved

Round 2 - Coding Test 

Java coding basic questions

Interview Preparation Tips

Interview preparation tips for other job seekers - It's easy to crack

I applied via Company Website

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. What is the work in office
  • Q2. What is timings in day
  • Ans. 

    Timings in a day refer to the different periods of time that make up a 24-hour day.

    • A day is typically divided into morning, afternoon, evening, and night

    • Different cultures may have different ways of dividing a day

    • Timings can also refer to specific times for events or activities

  • Answered by AI
Round 3 - HR 

(4 Questions)

  • Q1. How much salary per month
  • Q2. What is timing in the day
  • Ans. 

    Timing in the day refers to the different periods or divisions of time within a 24-hour cycle.

    • Timing in the day includes morning, afternoon, evening, and night.

    • It helps in organizing daily activities and scheduling tasks.

    • Different cultures may have different names or divisions for timing in the day, such as siesta or tea time.

    • Timing in the day can also be represented using the 12-hour or 24-hour clock system.

  • Answered by AI
  • Q3. How to procesa I share my details
  • Q4. Please tell me the process

Interview Preparation Tips

Interview preparation tips for other job seekers - Job seekers are known all knowledge and seek easy way to apply for job
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Aug 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

Logical and reasoning, Maths

Round 2 - Coding Test 

Basic coding Java & C

Round 3 - Technical 

(2 Questions)

  • Q1. Array and types
  • Q2. Inheritance & OOPS

Interview Preparation Tips

Interview preparation tips for other job seekers - For fresher, Prepare basics

Cogent E Services Interview FAQs

How many rounds are there in Cogent E Services Node JS Developer interview?
Cogent E Services interview process usually has 6 rounds. The most common rounds in the Cogent E Services interview process are Technical, Coding Test and Aptitude Test.
What are the top questions asked in Cogent E Services Node JS Developer interview?

Some of the top questions asked at the Cogent E Services Node JS Developer interview -

  1. None of the follow...read more
  2. No e don’t have n...read more
  3. Bnine don’t havec...read more

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Cogent E Services Node JS Developer Interview Process

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