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_VOIS Data Analyst and Bigdata Developer Interview Questions and Answers

Updated 26 Sep 2023

_VOIS Data Analyst and Bigdata Developer Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Company Website and was interviewed in Aug 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 

All the general aptitude question

Round 3 - Group Discussion 

They will ask for college project

Round 4 - HR 

(4 Questions)

  • Q1. About your hobbies and location
  • Q2. What is your native place
  • Q3. Are u willing to shift to Pune
  • Q4. What about present situation

Interview Preparation Tips

Interview preparation tips for other job seekers - Be genuine while answering

Interview questions from similar companies

Interview Preparation Tips

Round: Test
Experience: Apti was quite easy . In Basic CS concepts software engineering is prominent.
Tips: Brush up Software Engineering before written test
Duration: 90 minutes
Total Questions: 50

College Name: NIT BHOPAL

I was interviewed before Aug 2016.

Interview Preparation Tips

Round: General and technical aptitude
Experience: There were questions on basics of programming and general questions on verbal,reasoning and quantitative.
Tips: Time will be short to answer all so keep watch on time

Round: Group Discussion
Experience: They segregated us in to batches and in our team there were 10 members.
Tips: Easy round
Duration: 15 minutes

Round: Telephonic
Experience: They tested my communication skill in that round

College Name: Dhanalakshmi college of engineering

I was interviewed 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 was interviewed 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 was interviewed 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 was interviewed in Dec 2016.

Interview Questionnaire 

8 Questions

  • Q1. What was your final year project about
  • Ans. 

    My final year project was about developing a mobile application for tracking and managing personal finances.

    • Developed a user-friendly interface for inputting and categorizing expenses

    • Implemented features for setting budgets and generating reports on spending habits

    • Utilized data encryption to ensure the security of financial information

  • Answered by AI
  • Q2. Which role of sdlc were you a part of in your project
  • Ans. 

    I was involved in the testing phase of the SDLC in my project.

    • Participated in creating test cases and executing them

    • Collaborated with developers to identify and fix bugs

    • Ensured the quality of the software before release

  • Answered by AI
  • Q3. Work done in internship
  • Ans. 

    During my internship, I was responsible for assisting with various tasks such as data analysis, project management, and client communication.

    • Assisted with data analysis by collecting and organizing data sets

    • Managed projects by creating timelines, delegating tasks, and tracking progress

    • Communicated with clients to gather feedback and provide updates on project status

  • Answered by AI
  • Q4. Why do you want to join jio
  • Ans. 

    I want to join Jio because of its innovative and disruptive approach in the telecom industry.

    • Jio has revolutionized the telecom industry with its affordable data plans and high-speed internet.

    • I am impressed by Jio's commitment to digital transformation and its focus on providing cutting-edge technology to its customers.

    • Jio's extensive network coverage and strong infrastructure make it an exciting company to work for.

    • I ...

  • Answered by AI
  • Q5. Family background
  • Q6. Can classes be declared abstract in java
  • Ans. 

    Yes, abstract classes can be declared in Java.

    • Abstract classes cannot be instantiated

    • They can have abstract and non-abstract methods

    • Subclasses must implement all abstract methods

    • Example: abstract class Animal { abstract void makeSound(); }

    • Example: class Dog extends Animal { void makeSound() { System.out.println("Bark"); }}

  • Answered by AI
  • Q7. Explain polymorphism with a program
  • Ans. 

    Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were of the same class.

    • Polymorphism is achieved through method overriding and method overloading.

    • Method overriding is when a subclass provides its own implementation of a method that is already provided by its parent class.

    • Method overloading is when a class has multiple methods with the same n...

  • Answered by AI
  • Q8. Advantages of recursion
  • Ans. 

    Recursion allows for elegant and concise code, simplifies complex problems, and can be more efficient in certain cases.

    • Recursion can simplify complex problems by breaking them down into smaller subproblems.

    • It allows for elegant and concise code, especially when dealing with data structures like trees and graphs.

    • Recursion can be more efficient in certain cases, such as when calculating factorials or Fibonacci numbers.

    • Ho...

  • Answered by AI

Interview Preparation Tips

Round: Group Discussion
Duration: 10 minutes

Round: Technical + HR Interview
Experience: After he was satisfied with my answers he explained me my job role, salary and the growth in the organization
Tips: Be confident and prepare your CV well..That should do it

Skills evaluated in this interview

I was interviewed in Mar 2017.

Interview Preparation Tips

Round: Test
Experience: Test was online.
1. In Hadoop, Big Data & Wireless Communication section, there were 10-10 question with 15 minutes of time in each of three.
These three section were quite logical rather than calculative.

2. Quant & Apti section was quite easy. Fill in the blanks type questions were also present. There was 50 question in this section and only 12 minutes were given to solve.
Over all this section was very easy and scoring.
Tips: As a graduate or PG fresher in ECE, you can score in Mobile communication & Non-tech portion.
Try to score in Apti part as much as you can.
Duration: 1 hour
Total Questions: 80

Round: Problem Statement
Experience: In this round one person from the selection panel of five gave the three question as a problem and asked to write our own strategy to tackle.
The questions were:
1. What do you mean by a network ?
2. Problem related to LOS and non LOS communication.
3. Signal fading in Communication.
Tips: Just use your technical skills, you can easily answer these question if you have a good understanding of the Wireless communication.

Round: Coding Test.
Experience: This round was also not for elimination.
They just gave a sheet of five question of coding.The questions were:
1. To add 2 very long integer type number.
2. To draw the mirror image of a given tree.
3. To find the loop in a link list.
4. To find the max possible sum of an array of positive and negative no.
5. Ques. was related to a given figure to write the Algo to find the center of the circle.(fig. was given in the ques.).


Tips: To clear this round you need to be proficient at least in one coding language.

Round: Technical + HR Interview
Experience: They shortlisted 47 person from IIT Roorkee for the written.
Up to this round only 19 were present.
Duration of my interview was only 25-30 minutes.
There are 5 members panel(4 Tech+ 1HR).
One person in from Israel(Data mining expert),Second was from Sweden(Coding expert),Third & fourth were from India and Wireless comm. and architecture expert. 5th was HR person from India.
They started from the coding section form the test sheet ques.
He asked to explain all the coding ques and about my logic behind that.
Then they asked about Big data and Machine learning question.
As I don't know much about these topic I replied that I don't know sir.
After that they asked to explain my B.tech and M.tech project ,then they asked some ques related to project.
Then they asked ques from Wireless communication and Architecture of 1G to 5G to explain.
They asked ques from GSM, FDM, CDMA,TDM,OFDM.
They asked me the various reason behind call dropping.
Then he asked my B.tech communication subject when I told him my Analog & Digital comm. topic then he started laughing and told me that these techniques are completely outdated.
In last they asked my GATE %ile then I replied 99.42.
HR person was just observing my answering skills.

Tips: The interview was going on very fast they gave only 4-5 sec to think otherwise next ques was waiting for me.
Be confident and try to give the answer with some basic concept.
As for as my concern, They were just checking our base knowledge in there field specially in Wireless comm. and some courses in Machine learning or Data mining is a plus point.

Skills: Basic Concepts, Understanding Ability
College Name: IIT Roorkee

I was interviewed in Apr 2017.

Interview Questionnaire 

17 Questions

  • Q1. What are the different layers of OSI model?
  • Q2. What is the difference between 3g and 4g
  • Ans. 

    4G is faster and more efficient than 3G.

    • 4G has faster download and upload speeds than 3G.

    • 4G has lower latency than 3G, meaning there is less delay in data transfer.

    • 4G uses more advanced technology than 3G, allowing for more efficient use of bandwidth.

    • Examples of 4G networks include LTE and WiMAX.

    • Examples of 3G networks include HSPA and EV-DO.

  • Answered by AI
  • Q3. GSM architecture
  • Q4. Difference between OSS and NSS of GSM architecture
  • Ans. 

    OSS and NSS are two components of the GSM architecture that serve different functions.

    • OSS stands for Operation Support System and is responsible for managing and monitoring the network.

    • NSS stands for Network and Switching Subsystem and handles the call processing and switching functions.

    • OSS includes components like Network Management System (NMS) and Element Management System (EMS).

    • NSS includes components like Mobile S...

  • Answered by AI
  • Q5. Tell me about yourself in brief
  • Ans. 

    I am a dedicated and experienced professional with strong leadership skills and a passion for achieving results.

    • Experienced in managing teams and driving performance

    • Proven track record of meeting and exceeding targets

    • Excellent communication and interpersonal skills

    • Strong problem-solving and decision-making abilities

    • Ability to adapt to changing environments and handle multiple tasks

    • Example: As an Assistant Manager at XY...

  • Answered by AI
  • Q6. Tell me about youself
  • Ans. 

    I am a highly motivated and experienced professional with a strong background in management and leadership.

    • Over 5 years of experience in management roles

    • Proven track record of successfully leading teams and achieving targets

    • Excellent communication and problem-solving skills

    • Strong organizational and time management abilities

    • Ability to adapt to changing environments and handle multiple tasks

    • Led a team of 15 employees and

  • Answered by AI
  • Q7. Difference between Zigbee and Bluetooth
  • Ans. 

    Zigbee is a low-power, low-data-rate wireless network protocol while Bluetooth is a short-range wireless technology.

    • Zigbee is designed for home automation, industrial control, and sensor networks.

    • Bluetooth is used for wireless audio streaming, file transfer, and device control.

    • Zigbee has a longer range and can support more devices than Bluetooth.

    • Bluetooth has a higher data transfer rate and is more commonly used in con...

  • Answered by AI
  • Q8. Drawbacks of android
  • Ans. 

    Android has some drawbacks that need to be considered.

    • Fragmentation of the operating system across different devices

    • Security vulnerabilities due to open-source nature

    • Battery drain and performance issues with certain apps

    • Lack of timely software updates for older devices

    • Compatibility issues with some apps and hardware

    • Privacy concerns with app permissions

  • Answered by AI
  • Q9. Currently which mobile phone was using and its specification
  • Ans. 

    I am currently using an iPhone 12 Pro with 128GB storage.

    • I prefer iOS over Android.

    • The iPhone 12 Pro has a 6.1-inch Super Retina XDR display.

    • It has a triple-camera system with 12MP Ultra Wide, Wide, and Telephoto lenses.

    • The phone has 5G capability and uses Apple's A14 Bionic chip.

    • I chose the 128GB storage option for my needs.

  • Answered by AI
  • Q10. What are your 3 career goals?
  • Ans. 

    My career goals are to advance to a managerial position, develop strong leadership skills, and contribute to the growth and success of the company.

    • Advance to a managerial position

    • Develop strong leadership skills

    • Contribute to the growth and success of the company

  • Answered by AI
  • Q11. Family related questions and preferred location
  • Q12. Discussion on : role in company
  • Q13. CTC offered and policy
  • Q14. Questions were technical and in depth. Virtual Reality?
  • Q15. IOT? example
  • Ans. 

    IOT stands for Internet of Things. It refers to the network of physical devices, vehicles, home appliances, and other items embedded with electronics, software, sensors, and connectivity which enables these objects to connect and exchange data.

    • IOT is a network of physical devices that are connected to the internet and can exchange data

    • Examples of IOT devices include smart home appliances, wearables, and industrial sens...

  • Answered by AI
  • Q16. Why Reliance Jio?
  • Ans. 

    Reliance Jio offers a dynamic and innovative work environment with excellent growth opportunities.

    • Reliance Jio is a leading telecommunications company in India, known for its disruptive and innovative approach.

    • The company has revolutionized the telecom industry by offering affordable data and voice services to millions of people.

    • Reliance Jio's focus on digital transformation and cutting-edge technology makes it an exci...

  • Answered by AI
  • Q17. Sensors and working

Interview Preparation Tips

Round: Technical Interview
Experience: This was the telephonic round and it lasted for about 10 minutes. Questions were rapid but it went smooth.
Tips: Be confident and don't fumble.

Round: Technical + HR Interview
Experience: This was a skype interview which lasted for 10 mins. it was rigorous and intense.
Tips: Be confident

Round: Stress Interview
Experience: This was a skype interview and was intense.

Round: HR Interview
Experience: Casual interaction

Skills: Communication And Confidence, Proficiency In English, Technical Knowledge(ML, Project And Training

Skills evaluated in this interview

I applied via Referral and was interviewed before Apr 2017. There were 6 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. CMM technical interview. HR negotiation
  • Q2. Only about packages no for benefits

Interview Preparation Tips

Round: Resume Shortlist
Experience: Education
Experience


Round: Group Discussion
Experience: Telecom problem and resolution

General Tips: I just given interviews to HOD for only 15 minutes and selected.
Skills: Communication, Body Language, Problem Solving, Time Management, Decision Making Skills
Duration: 1-4 weeks

_VOIS Interview FAQs

How many rounds are there in _VOIS Data Analyst and Bigdata Developer interview?
_VOIS interview process usually has 4 rounds. The most common rounds in the _VOIS interview process are Resume Shortlist, Aptitude Test and Group Discussion.

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_VOIS Data Analyst and Bigdata Developer Interview Process

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