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ValueLabs React Developer Interview Questions, Process, and Tips

Updated 19 Apr 2021

ValueLabs React Developer Interview Experiences

1 interview found

I applied via Naukri.com and was interviewed in Mar 2021. There was 1 interview round.

Interview Questionnaire 

7 Questions

  • Q1. How do you connect a component to Redux store? Which function in Redux is used to connect to store? What are the parameters in connect?
  • Ans. 

    To connect a component to Redux store, we use the connect function from the react-redux library.

    • Import the connect function from react-redux.

    • Use the connect function to wrap the component and connect it to the Redux store.

    • The connect function takes two parameters: mapStateToProps and mapDispatchToProps.

    • mapStateToProps is a function that maps the state from the Redux store to the component's props.

    • mapDispatchToProps is ...

  • Answered by AI
  • Q2. What is Context API in React? Is there a need to have an initial state in Context API?
  • Ans. 

    Context API is a way to share data between components without passing props down manually.

    • Context API provides a way to pass data through the component tree without having to pass props down manually at every level.

    • It is useful for sharing data that needs to be accessed by many components at different levels of the tree.

    • Initial state can be set in Context API using the createContext() function.

    • There is no need to have ...

  • Answered by AI
  • Q3. Do Reducer need to have an initial state compulsorily?
  • Ans. 

    Yes, it is mandatory for Reducer to have an initial state.

    • Initial state defines the starting point of the state tree.

    • It helps in defining the shape of the state tree.

    • It is used to set default values for the state properties.

    • It is also used to reset the state to its initial values.

    • Example: const initialState = { count: 0 };

    • Example: const initialState = { name: '', age: 0 };

  • Answered by AI
  • Q4. What is the minimum coverage for an app? How much code do you push to production/master branch while deployment?
  • Ans. 

    Minimum coverage for an app and code pushed to production/master branch while deployment.

    • Minimum coverage for an app depends on the project requirements and complexity.

    • Generally, a coverage of 80% or higher is considered good.

    • Code pushed to production/master branch should be thoroughly tested and reviewed.

    • Continuous integration and deployment can help automate this process.

    • Examples of tools for code coverage include Je

  • Answered by AI
  • Q5. Will React re-render whole page or just a part of it?
  • Ans. 

    React re-renders just the part of the page that has changed, thanks to its virtual DOM.

    • React uses a virtual DOM to track changes in the UI.

    • When a component's state or props change, React compares the virtual DOM with the real DOM and updates only the necessary parts.

    • This approach improves performance by minimizing the number of DOM manipulations.

    • React's diffing algorithm efficiently determines the minimal set of change

  • Answered by AI
  • Q6. What are the use cases of Service Workers?
  • Ans. 

    Service Workers are scripts that run in the background and can intercept network requests, cache or modify responses.

    • Offline support for web applications

    • Push notifications

    • Background synchronization

    • Reduced network usage and faster page loads

    • Progressive Web Apps (PWA)

  • Answered by AI
  • Q7. Explain Redux-Saga middleware. How do you Dispatch actions from components in Redux?
  • Ans. 

    Redux-Saga is a middleware for Redux that handles side effects. Actions can be dispatched from components using mapDispatchToProps.

    • Redux-Saga is used to handle side effects like API calls and asynchronous actions.

    • It uses generator functions to make asynchronous code look synchronous.

    • Sagas listen for specific actions and perform tasks based on those actions.

    • To dispatch actions from components, use mapDispatchToProps to ...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Appeared for the First Round Technical Interview. Video call. Interviewer was a nice person. You can clear this round if your concepts are clear about react, Redux, Middleware or other keywords mentioned in your resume.

Skills evaluated in this interview

React Developer Jobs at ValueLabs

View all

Interview questions from similar companies

I applied via LinkedIn and was interviewed in Sep 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. What happens if there is finally block inside an exception block?
  • Ans. 

    Finally block will always execute, even if an exception is thrown in the try or catch block.

    • Finally block is used to execute code that must always run, regardless of whether an exception was thrown or not.

    • If an exception is thrown in the try or catch block, the finally block will still execute.

    • Finally block is often used to release resources like file handles, database connections, etc.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - There were two rounds of technical discussion. First round took around 45 mins which mainly concentrated on Django related concepts. Second round was the customer interaction and the questions were mostly the scenario based and it was asked on Python concepts. Both the rounds carried its own weight. The key to clear any interview is "Be strong in your basics".

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Nov 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. 1.Cloud/Kubernetes 2.linux 3.volte

Interview Preparation Tips

Interview preparation tips for other job seekers - I belong to Telecom sector so according to my profile and other users which are belong to same sector... Please focus of cloud/Kubernetes, Linux, 4G/5G...

I applied via Referral and was interviewed before Nov 2021. There were 2 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 Resume tips
Round 2 - One-on-one 

(2 Questions)

  • Q1. Brief about my roles
  • Q2. Explanation about my previous job

Interview Preparation Tips

Interview preparation tips for other job seekers - Just tell the truth about your experience and they will look for the answers from your resume and they will ask about their requirements

I applied via Naukri.com and was interviewed in Feb 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Fiori elements Git BTP

Interview Preparation Tips

Interview preparation tips for other job seekers - Explore on new technology and SAP Tools

I applied via Referral and was interviewed before Mar 2021. There were 3 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 Resume tips
Round 2 - Technical 

(2 Questions)

  • Q1. Technical Evaluation
  • Q2. Technology related evaluation
Round 3 - HR 

(1 Question)

  • Q1. What are your salary expectations?

Interview Preparation Tips

Topics to prepare for Wipro Technical Lead interview:
  • SSIS
  • SQL Server
Interview preparation tips for other job seekers - prepare yourself for theoretical as well as practical questions as Wipro has different interview panels and you can come across any panel

I applied via Referral and was interviewed before Jul 2020. There was 1 interview round.

Interview Questionnaire 

3 Questions

  • Q1. How to add users in data administration?
  • Ans. 

    To add users in data administration, follow these steps:

    • Log in to the data administration system

    • Navigate to the user management section

    • Click on the 'Add User' button

    • Fill in the required user details such as name, email, and password

    • Assign appropriate roles and permissions to the user

    • Save the changes and the user will be added to the system

  • Answered by AI
  • Q2. What is the team size you have handled?
  • Q3. How to create libraries for electrical and instrumentation requirements?
  • Ans. 

    Libraries for electrical and instrumentation requirements can be created by following a structured approach.

    • Identify the requirements and specifications of the library

    • Design the library structure and components

    • Develop and test the library

    • Document the library for ease of use and maintenance

    • Continuously update and improve the library based on feedback and changes in requirements

    • Examples: National Instruments LabVIEW libr

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep up to date resume with you and be prepared with the resume

Skills evaluated in this interview

I applied via Referral and was interviewed in Feb 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Asked question related to SQL server administration and azure.

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well on high availability.

I applied via Referral and was interviewed before Jun 2021. There were 3 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 Resume tips
Round 2 - Technical 

(4 Questions)

  • Q1. Difference between functions and procedure in oracle
  • Ans. 

    Functions return a value while procedures do not in Oracle.

    • Functions are used to perform a specific task and return a value.

    • Procedures are used to perform a specific task but do not return a value.

    • Functions can be used in SQL statements while procedures cannot.

    • Functions can be called from within procedures while procedures cannot be called from within functions.

  • Answered by AI
  • Q2. Cursor and it's attributes in oracle
  • Ans. 

    Cursor is a pointer to a private SQL area that stores information about processing a specific SELECT or DML statement.

    • Attributes include %FOUND, %NOTFOUND, %ROWCOUNT, %ISOPEN, %BULK_ROWCOUNT, %BULK_EXCEPTIONS

    • Used to fetch and manipulate data from a result set

    • Can be declared and used in PL/SQL blocks

    • Example: OPEN cursor_name FOR SELECT * FROM table_name WHERE column_name = value;

  • Answered by AI
  • Q3. Removing duplicate records in sql
  • Ans. 

    Removing duplicate records in SQL

    • Use SELECT DISTINCT to retrieve unique records

    • Use GROUP BY to group records by a specific column

    • Use HAVING to filter out groups with more than one record

    • Use DELETE to remove duplicate records from the table

  • Answered by AI
  • Q4. Advantages of using packages in oracle
  • Ans. 

    Packages in Oracle provide modularity, encapsulation, and reusability of code.

    • Packages group related procedures, functions, and variables together.

    • Packages provide a namespace for the objects they contain, avoiding naming conflicts.

    • Packages can be compiled and stored in the database for efficient execution.

    • Packages can be granted privileges, allowing controlled access to their contents.

    • Packages can be versioned and upg...

  • Answered by AI
Round 3 - HR 

(3 Questions)

  • Q1. Regarding salary expectation
  • Q2. Regarding work location
  • Q3. Regarding notice period

Interview Preparation Tips

Interview preparation tips for other job seekers - Answer boldly and with clear words. If it a scenario based question listen carefully and convey your answer. If you have any doubts in understanding the scenario call it out so the interview can put in a way you understand.

Skills evaluated in this interview

I applied via Referral and was interviewed in Mar 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. OOP principles, IOC principles, AOP principles

Interview Preparation Tips

Interview preparation tips for other job seekers - The interviewer was nice and friendly manner
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ValueLabs Interview FAQs

How to prepare for ValueLabs React 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 ValueLabs. The most common topics and skills that interviewers at ValueLabs expect are Javascript, React.Js, HTML, Redux and CSS.
What are the top questions asked in ValueLabs React Developer interview?

Some of the top questions asked at the ValueLabs React Developer interview -

  1. How do you connect a component to Redux store? Which function in Redux is used ...read more
  2. What is Context API in React? Is there a need to have an initial state in Conte...read more
  3. What is the minimum coverage for an app? How much code do you push to productio...read more

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