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TCS React Native Developer Interview Questions and Answers

Updated 31 Dec 2024

TCS React Native Developer Interview Experiences

4 interviews found

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What is virtual dom?
  • Ans. 

    Virtual DOM is a lightweight copy of the actual DOM, used for efficient updates in React applications.

    • Virtual DOM is a concept in React where a lightweight copy of the actual DOM is created.

    • It allows React to efficiently update the UI by comparing the virtual DOM with the actual DOM and only making necessary changes.

    • This helps in improving performance by reducing the number of direct manipulations to the actual DOM.

    • For...

  • Answered by AI
  • Q2. Whats call, bind, apply?
  • Ans. 

    call, bind, and apply are methods used to manipulate the context of a function in JavaScript.

    • call - calls a function with a given 'this' value and arguments provided individually.

    • bind - creates a new function that, when called, has its 'this' keyword set to the provided value.

    • apply - calls a function with a given 'this' value and arguments provided as an array.

  • Answered by AI

Skills evaluated in this interview

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

I applied via Approached by Company and was interviewed in Sep 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Tell me about the projects handled by you
  • Ans. 

    I have worked on various projects ranging from e-commerce apps to social networking platforms.

    • Developed a mobile e-commerce app using React Native, integrating with backend APIs for product listings and user authentication

    • Built a social networking platform with real-time messaging functionality using Firebase and Redux for state management

    • Optimized app performance by implementing code splitting and lazy loading techniq

  • Answered by AI
  • Q2. Have you handled a team
  • Ans. 

    Yes, I have experience handling a team in previous projects.

    • Led a team of developers in a project to develop a React Native app

    • Assigned tasks, set deadlines, and ensured team members were on track

    • Conducted regular team meetings to discuss progress and address any issues

    • Provided guidance and support to team members to help them succeed

    • Collaborated with other teams to ensure smooth project delivery

  • Answered by AI

React Native Developer Interview Questions Asked at Other Companies

Q1. 3. What is the use useEffect Hook in react native? and how you re ... read more
asked in Cognizant
Q2. what are hooks and what are the hooks you have used
asked in Cognizant
Q3. Are you familiar with new architecture of React native
asked in Simform
Q4. 1. What is git rebase used for? 2. What is Flipper used for? 3. W ... read more
Q5. 7. What is the best practice for calling API's?
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Related to React Native and JavaScript
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

It was a technical round happened for 1 hr including coding test. After that in the same call Manager round happened for 20 min. Finally they took screenshot with all the people involved in recruitment process which is a sign of selected.

TCS interview questions for designations

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 (5)

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 (1)

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 (17)

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 (46)

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 Salesforce Developer

 (35)

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 (33)

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Interview questions from similar companies

I appeared for an interview in Apr 2017.

Interview Questionnaire 

2 Questions

  • Q1. Java questions...
  • Q2. Tell me about urself and about us family and all
  • Ans. 

    I am a software developer with a passion for coding and problem-solving. My family is supportive and has always encouraged my career in tech.

    • Experienced software developer

    • Passionate about coding and problem-solving

    • Supportive family that encourages my career in tech

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: Easy questions are there
Duration: 1 hour
Total Questions: 90

Round: Group Discussion
Experience: 12 members are there only 9 got selected
Tips: Be confident in urself and specially work in Communication skills
Duration: 15 minutes

Round: Technical Interview
Experience: Asking all the concepts of Java like oops collections threads
Tips: Prepare well on Java

Round: HR Interview
Experience: Everything was Gud but due to my certificate problem I got rejected.. Otherwise everything is good.
Tips: Be confident

College Name: C. V. Raman College of Engineering

I appeared for an interview before Mar 2021.

Round 1 - Face to Face 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Easy

This was an easy round which went really smooth.

  • Q1. 

    Nth Fibonacci Number Problem Statement

    Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows: F(n) = F(n-1) + F(n-2), with initial conditions F(1) = F(2) = 1.

    Input:

    ...
  • Ans. 

    Calculate the Nth Fibonacci number efficiently using dynamic programming.

    • Use dynamic programming to store previously calculated Fibonacci numbers to avoid redundant calculations.

    • Start with base cases F(1) and F(2) as 1, then iteratively calculate F(n) using F(n-1) and F(n-2).

    • Ensure the input N is within the constraints 1 <= N <= 10000.

    • Example: For N = 5, the 5th Fibonacci number is 5 (1, 1, 2, 3, 5).

  • Answered by AI
  • Q2. 

    Prime Numbers Problem Statement

    Given a positive integer N, your task is to determine and return all prime numbers less than or equal to N.

    Input:

    N = 10

    Output:

    2 3 5 7

    Example:

    Input:
    N = 20
    Out...
  • Ans. 

    Implement a function to return all prime numbers less than or equal to a given positive integer N.

    • Create a function that takes a positive integer N as input

    • Iterate from 2 to N and check if each number is prime

    • Use a helper function to determine if a number is prime

    • Return an array of all prime numbers less than or equal to N

  • Answered by AI
  • Q3. What is a merge join in SQL?
  • Ans. 

    A merge join in SQL is a method of combining two sorted datasets by matching corresponding rows based on a specified condition.

    • Merge join is used when joining two large datasets that are already sorted.

    • It is more efficient than other join methods like nested loop join or hash join for sorted datasets.

    • The join condition must be an equality condition.

    • Example: SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.i

  • Answered by AI
Round 2 - HR 

Round duration - 30 minutes
Round difficulty - Easy

The round went excellent. I really enjoyed it. Just be confident about whatever you answer

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPALarsen & Toubro Infotech (LTI) interview preparation:Topics to prepare for the interview - Database, Basic C/C++, Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

I appeared for an interview before Mar 2021.

Round 1 - Face to Face 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Easy

This round went well. Interview depends on your basic knowledge of C/C++.

  • Q1. 

    Matrix Multiplication Task

    Given two sparse matrices MAT1 and MAT2 of integers with dimensions 'N' x 'M' and 'M' x 'P' respectively, the goal is to determine the resulting matrix produced by their multipl...

  • Ans. 

    Implement a function to multiply two sparse matrices and return the resulting matrix.

    • Create a function that takes two sparse matrices as input and returns the resulting matrix after multiplication

    • Iterate through the non-zero elements of the matrices to perform the multiplication efficiently

    • Handle the edge cases such as empty matrices or matrices with all zero elements

    • Ensure the dimensions of the matrices are compatible

  • Answered by AI
  • Q2. 

    Problem: Count Even or Odd in Array

    Tanmay and Rohit are best buddies. Tanmay gives Rohit a challenge involving an array of N natural numbers. The task is to perform and answer a series of queries on the ...

  • Ans. 

    Count the number of even or odd numbers in a range of an array based on given queries.

    • Create an array to store the input numbers.

    • Iterate through the queries and update or count even/odd numbers based on the query type.

    • Output the count of even or odd numbers for each query of type 1 or 2.

  • Answered by AI
Round 2 - HR 

Round duration - 30 minutes
Round difficulty - Easy

Typical HR round with behavioral problems.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPALarsen & Toubro Infotech (LTI) interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

I appeared for an interview before Sep 2016.

Interview Preparation Tips

Round: Group Discussion
Experience: Interview was scheduled in Grab Job consultancy. In that, a class room, where we all asked to sit and interviewer was sitting in front and asked to speak one by one on the topic traffic situation in Hyderabad.
Tips: Just speak once two to three lines. Don't rush to speak. Take ur time and don't try speak repeatedly.
Duration: 35 minutes

Round: Technical Interview
Experience: System based test. Easy question from java , c, data structure.

Round: HR Interview
Experience: Not held because already we got too late.

Skills: Proficiency In English, Basic Coding
College Name: Medak College of engineering

I appeared for an interview in Mar 2017.

Interview Questionnaire 

5 Questions

  • Q1. Oops concepts in Java?
  • Ans. 

    Oops concepts in Java

    • Encapsulation - hiding implementation details

    • Inheritance - reusing code and creating parent-child relationships

    • Polymorphism - multiple forms of a method or object

    • Abstraction - creating abstract classes and interfaces

    • Example: Encapsulation - using private variables and public methods

    • Example: Inheritance - creating a subclass that inherits from a superclass

    • Example: Polymorphism - using method overloa...

  • Answered by AI
  • Q2. Altering columns in Databases?
  • Ans. 

    Altering columns in databases involves modifying the structure of a table by adding, deleting or modifying columns.

    • Use ALTER TABLE statement to modify columns

    • Add new columns using ADD COLUMN

    • Delete columns using DROP COLUMN

    • Modify columns using MODIFY COLUMN

    • Changing column data type may result in data loss

  • Answered by AI
  • Q3. Asked some queries in SQL
  • Q4. Reversing a number in java?
  • Ans. 

    Reversing a number in Java

    • Convert the number to a string

    • Use StringBuilder to reverse the string

    • Convert the reversed string back to a number

  • Answered by AI
  • Q5. Extracting words from a line in java?
  • Ans. 

    To extract words from a line in Java, split the line using whitespace as delimiter.

    • Use the split() method of String class

    • Pass the whitespace regex as argument to split() method

    • Iterate over the resulting array to get individual words

  • Answered by AI

Interview Preparation Tips

Round: Technical Interview
Experience: Started with the question "Tell me about yourself". Asked me about Core Java. Asked to solve some questions related to Java and SQL.
Tips: Be prepared with high knowledge in Java, Data Structures and SQL.

Skills: Java Programming, Data Strrutures, SQL
College Name: IIITDM Jabalpur

Skills evaluated in this interview

Software Developer Interview Questions & Answers

Capgemini user image Dwarkesh Maheshwari

posted on 23 Sep 2017

I appeared for an interview in Sep 2017.

Interview Questionnaire 

1 Question

  • Q1. Basic c questions and sorting Then about projects

Interview Preparation Tips

Round: Test
Experience: Basic apti questions
But reasoning was tricky
Tips: Don't waste time
Duration: 1 hour
Total Questions: 32

Round: Technical test
Experience: Basic c question
SQL questions
Tips: Must have deep knowledge in c

Round: Technical Interview
Experience: Briefly explain my project and then successfully answerd questions asked
Tips: Complete knowledge of your project

College Name: KIET

TCS Interview FAQs

How many rounds are there in TCS React Native Developer interview?
TCS interview process usually has 1 rounds. The most common rounds in the TCS interview process are Technical and Coding Test.
How to prepare for TCS React Native Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at TCS. The most common topics and skills that interviewers at TCS expect are React Native, MVVM, Javascript, Android and IOS.
What are the top questions asked in TCS React Native Developer interview?

Some of the top questions asked at the TCS React Native Developer interview -

  1. Whats call, bind, app...read more
  2. What is virtual d...read more
  3. Related to React Native and JavaScr...read more

Tell us how to improve this page.

TCS React Native Developer Interview Process

based on 4 interviews

1 Interview rounds

  • Technical Round
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TCS React Native Developer Salary
based on 51 salaries
₹3.5 L/yr - ₹11 L/yr
17% more than the average React Native Developer Salary in India
View more details

TCS React Native Developer Reviews and Ratings

based on 3 reviews

4.0/5

Rating in categories

4.5

Skill development

4.5

Work-life balance

3.0

Salary

5.0

Job security

4.5

Company culture

2.0

Promotions

4.0

Work satisfaction

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React Native Developer

Bhubaneswar

4-9 Yrs

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