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Vodafone Idea Graduate Engineer Interview Questions, Process, and Tips

Updated 4 Mar 2025

Top Vodafone Idea Graduate Engineer Interview Questions and Answers

Vodafone Idea Graduate Engineer Interview Experiences

3 interviews found

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I was interviewed in Feb 2025.

Round 1 - Coding Test 

Please pose three questions, with two being of easy to medium difficulty focusing on basic arrays and the two-pointer approach, while the third should be a standard dynamic programming question.

Round 2 - One-on-one 

(2 Questions)

  • Q1. What are the basic concepts of Object-Oriented Programming (OOP)?
  • Q2. What questions were asked about the projects mentioned in your resume?

Interview Preparation Tips

Interview preparation tips for other job seekers - A great workplace with an excellent culture.
Interview experience
4
Good
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed in Jul 2022. 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 tips
Round 2 - Aptitude Test 

Basic questions based on aptitude, English and reasoning

Round 3 - One-on-one 

(5 Questions)

  • Q1. What is frequencyand explain it ?
  • Ans. 

    Frequency is the number of cycles per second in a periodic waveform.

    • Frequency is measured in Hertz (Hz).

    • It determines the pitch of a sound wave.

    • Higher frequency means higher pitch and vice versa.

    • Frequency is used in various fields like electronics, physics, and communication.

    • Example: The frequency of a radio station is 98.5 MHz.

  • Answered by AI
  • Q2. What is wavelength and explain it?
  • Ans. 

    Wavelength is the distance between two consecutive peaks or troughs of a wave.

    • Wavelength is measured in meters or nanometers.

    • It determines the color of light and sound frequency.

    • Shorter wavelengths have higher energy than longer wavelengths.

    • Examples include the wavelength of visible light, radio waves, and X-rays.

  • Answered by AI
  • Q3. Relationship between wavelength and frequency
  • Ans. 

    Wavelength and frequency are inversely proportional to each other.

    • Wavelength is the distance between two consecutive peaks or troughs of a wave.

    • Frequency is the number of waves passing through a point in one second.

    • The higher the frequency, the shorter the wavelength.

    • The lower the frequency, the longer the wavelength.

    • The relationship between wavelength and frequency is described by the equation: wavelength = speed of l...

  • Answered by AI
  • Q4. What is pulse code modulation
  • Ans. 

    Pulse code modulation is a digital representation of analog signals.

    • PCM is used to convert analog signals into digital signals.

    • It involves sampling the analog signal at regular intervals and quantizing the amplitude of each sample.

    • The resulting digital signal can be transmitted or stored more efficiently than the original analog signal.

    • PCM is commonly used in audio and video recording and transmission.

    • It is also used i

  • Answered by AI
  • Q5. Questions related to iot and it's applications

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare well for basics so that you would be able to clear the interview

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I applied via Campus Placement and was interviewed in Jan 2022. There were 5 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 

In aptitude test we have to solve 60 question in 60minutes

Round 3 - Group Discussion 

A single topic is given to the each candidate

Round 4 - Technical 

(1 Question)

  • Q1. Most asked questions from your academic projects and 1 language and database language
Round 5 - HR 

(1 Question)

  • Q1. Mostly non tech questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Do strong with your projects and role of your projects.

Interview questions from similar companies

I was interviewed before Sep 2016.

Interview Questionnaire 

16 Questions

  • Q1. On what technology you have worked?
  • Ans. 

    I have worked on various technologies including Java, Python, AWS, Docker, and Kubernetes.

    • Java

    • Python

    • AWS

    • Docker

    • Kubernetes

  • Answered by AI
  • Q2. Case studies of daily operational activities?
  • Ans. 

    Daily operational activities case studies

    • Case study of optimizing production line for efficiency

    • Case study of implementing new safety protocols in a manufacturing plant

    • Case study of troubleshooting and resolving technical issues in a software development team

    • Case study of streamlining inventory management in a retail store

    • Case study of improving customer service processes in a call center

  • Answered by AI
  • Q3. What is project management?
  • Ans. 

    Project management is the process of planning, organizing, and overseeing the execution of a project from start to finish.

    • It involves defining project goals and objectives

    • Creating a project plan and timeline

    • Assigning tasks and responsibilities to team members

    • Monitoring progress and making adjustments as needed

    • Ensuring that the project is completed on time, within budget, and meets the desired quality standards

    • Examples ...

  • Answered by AI
  • Q4. What is financial and cost control during project management?
  • Ans. 

    Financial and cost control is the process of monitoring and managing project expenses to ensure they stay within budget.

    • Developing a detailed budget plan

    • Tracking expenses and comparing them to the budget plan

    • Identifying and addressing cost overruns

    • Negotiating with vendors to get the best prices

    • Implementing cost-saving measures

    • Regularly reporting on financial status to stakeholders

  • Answered by AI
  • Q5. What is resource management?
  • Ans. 

    Resource management is the process of planning, allocating, and optimizing resources to achieve organizational goals.

    • It involves identifying the resources needed for a project or task

    • Allocating those resources in an efficient manner

    • Monitoring and controlling resource usage to ensure optimal performance

    • Examples include managing personnel, finances, equipment, and time

    • Effective resource management can lead to increased p

  • Answered by AI
  • Q6. What is 2G , 3G, 4G call flow?
  • Ans. 

    2G, 3G, and 4G call flow are the processes involved in establishing and maintaining a mobile phone call.

    • 2G call flow involves circuit-switched technology and uses Time Division Multiple Access (TDMA) for voice transmission.

    • 3G call flow uses packet-switched technology and supports both voice and data transmission.

    • 4G call flow uses Long-Term Evolution (LTE) technology and provides high-speed data transmission.

    • All call fl...

  • Answered by AI
  • Q7. What is single RAN?
  • Ans. 

    Single RAN is a network architecture that allows multiple wireless technologies to be supported on a single physical network.

    • Single RAN stands for Single Radio Access Network.

    • It enables multiple wireless technologies such as 2G, 3G, 4G, and 5G to be supported on a single physical network.

    • This reduces the need for multiple hardware and software components, resulting in cost savings and simplified network management.

    • Sing...

  • Answered by AI
  • Q8. What is VOLTE?
  • Ans. 

    VOLTE stands for Voice over LTE. It is a technology that allows voice calls to be made over a 4G LTE network.

    • VOLTE uses IP packets to transmit voice calls over the LTE network

    • It provides better call quality and faster call setup times compared to traditional 2G/3G networks

    • VOLTE also allows for simultaneous voice and data usage on the same network

    • Examples of VOLTE-enabled devices include iPhone 6 and above, Samsung Gala...

  • Answered by AI
  • Q9. Difference between LTE & VOLTE?
  • Ans. 

    LTE is a standard for wireless broadband communication while VoLTE is a technology that enables voice calls over LTE network.

    • LTE stands for Long-Term Evolution and is a standard for wireless broadband communication.

    • VoLTE stands for Voice over LTE and is a technology that enables voice calls over LTE network.

    • LTE is used for data transfer while VoLTE is used for voice calls.

    • VoLTE provides better call quality and faster c...

  • Answered by AI
  • Q10. What is transport network?
  • Ans. 

    Transport network refers to the infrastructure that enables the movement of people, goods, and information.

    • Transport network includes roads, railways, airports, seaports, and communication networks.

    • It plays a crucial role in the economy by facilitating trade and commerce.

    • Examples of transport networks include the interstate highway system in the US and the European railway network.

    • Transport network planning involves op...

  • Answered by AI
  • Q11. Difference between ABIS over IP and ABIS over TDM?
  • Ans. 

    ABIS over IP and ABIS over TDM are two different methods of transmitting biometric data.

    • ABIS over IP uses internet protocol to transmit biometric data while ABIS over TDM uses time-division multiplexing.

    • ABIS over IP is more flexible and scalable than ABIS over TDM.

    • ABIS over TDM is more reliable and secure than ABIS over IP.

    • ABIS over IP is suitable for remote locations while ABIS over TDM is suitable for local networks.

    • ...

  • Answered by AI
  • Q12. Basic architecture of 2G , 3G & 4G?
  • Ans. 

    2G, 3G, and 4G are mobile network technologies with different architectures.

    • 2G uses circuit-switched technology and is primarily used for voice calls and text messaging.

    • 3G uses packet-switched technology and offers faster data transfer rates than 2G.

    • 4G uses all-IP packet-switched technology and provides even faster data transfer rates than 3G.

    • 4G also supports advanced features like VoLTE and carrier aggregation.

    • Each ge...

  • Answered by AI
  • Q13. Introduce yourself?
  • Ans. 

    I am a Senior engineer with 10+ years of experience in software development, specializing in backend systems and cloud technologies.

    • 10+ years of experience in software development

    • Specialize in backend systems and cloud technologies

    • Strong problem-solving skills

    • Experience with large-scale distributed systems

    • Proficient in programming languages such as Java, Python, and Go

  • Answered by AI
  • Q14. What are the experiences of your previous companies?
  • Ans. 

    I have worked in various companies ranging from startups to large corporations, gaining experience in diverse technologies and industries.

    • Worked in a startup where I was responsible for developing a scalable backend system using Node.js and MongoDB.

    • At a mid-sized company, I led a team in implementing CI/CD pipelines for faster and more reliable software delivery.

    • In a large corporation, I worked on optimizing performanc...

  • Answered by AI
  • Q15. Why do you want to join this company?
  • Ans. 

    I am impressed by the company's innovative projects and strong reputation in the industry.

    • Company's reputation for cutting-edge technology

    • Opportunity to work on challenging projects

    • Positive reviews from current employees

  • Answered by AI
  • Q16. What is your notice period? Is it negotiable or not?
  • Ans. 

    My notice period is currently 3 months, but it may be negotiable depending on the circumstances.

    • My current notice period is 3 months

    • I am open to negotiation depending on the circumstances

    • I can provide examples of when I have negotiated notice periods in the past

  • Answered by AI

Interview Preparation Tips

Round: Resume Shortlist
Experience: Submitted resume online through portal and received the call. Technical Telephonic interview was scheduled.

Tips: Resume should be as per the desired profile.

Round: Technical Interview
Experience: In this round interviewer asks basic technical questions based on the previous experiences that was mentioned in my resume.
Tips: Study all the points mentioned in the resume very deeply.

Round: Technical Interview
Tips: Given your answers to the point. It should be in brief .

Round: HR Interview
Tips: Conversation should be in proper communication. Try to convince the HR for joining. Negotiate the salary as per the profile offered to you.

Skills: Technical Skill, Communication And Confidence, Team Working Ability

Skills evaluated in this interview

I applied via Referral and was interviewed before Jan 2021. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Telecom domine question
  • Q2. Auto Cad basics and experience on telecom and wireless based question

Interview Preparation Tips

Interview preparation tips for other job seekers - Only 2round for experience candidate

I applied via Recruitment Consultant and was interviewed in May 2019. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Capacity and coverage planning, ODSC channels and its coverage radius, TAC,LAC,NAC, RRC,eRAB, S1 signalling. LTE interfaces and their functions, PRB formations and no of PRB required to support single volt...
  • Q2. Why would you like to change?

Interview Preparation Tips

Interview preparation tips for other job seekers - Be prepared for odds and competent with technologies

Interview Questionnaire 

1 Question

  • Q1. Tell mee about your self?

Interview Preparation Tips

Interview preparation tips for other job seekers - Give properly reply being confident.

I applied via Approached by Company and was interviewed before May 2021. There were 3 interview rounds.

Round 1 - Coding Test 

Hacker rank test was given. 30 mcq and 1 coding test. Test duration is 1 hour. Core java and spring boot questions were covered.

Round 2 - Technical 

(1 Question)

  • Q1. Core Java, spring annotations, hashmap internal working, exception handling, working of rest controller, Java 8 features, code using streams api, multithreading concepts
Round 3 - Technical 

(1 Question)

  • Q1. Microservice architecture, working of spring Mvc, communications between microservice, actuator, swagger, why microservice is implemented, spring vs spring boot, design patterns used, questions related to ...

Interview Preparation Tips

Interview preparation tips for other job seekers - kindly update to java 8, lots of features are added in it. every organization expects their employee to be updated to newer technology and microservice is just an architectural design, be strong in core java concepts thats enough to get you landed in a job.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Aug 2022. 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 

AMCAT Test, OS, DSA, C, one simple coding question

Round 3 - Technical 

(1 Question)

  • Q1. Linked lists and project discussion
Round 4 - HR 

(1 Question)

  • Q1. Why Ericsson? What makes you stand out from other students
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed in Jan 2024. There was 1 interview round.

Round 1 - Technical 

(6 Questions)

  • Q1. 1. What is wireless communication?
  • Ans. 

    Wireless communication refers to the transmission of information without the use of physical connections or wires.

    • Wireless communication allows devices to communicate with each other over a distance using electromagnetic waves.

    • It enables the transfer of data, voice, and video signals wirelessly.

    • Examples of wireless communication technologies include Wi-Fi, Bluetooth, cellular networks, satellite communication, and radi

  • Answered by AI
  • Q2. 1. What is Telecommunication?
  • Ans. 

    Telecommunication is the transmission of information over a distance using electronic means.

    • Telecommunication involves the exchange of information between two or more parties.

    • It uses various technologies such as telephones, radios, television, and the internet.

    • Telecommunication enables real-time communication, allowing people to connect and communicate regardless of their physical location.

    • Examples of telecommunication...

  • Answered by AI
  • Q3. What are the types of modulations?
  • Ans. 

    Modulation is the process of varying a carrier signal in order to transmit information.

    • Amplitude Modulation (AM) - varying the amplitude of the carrier signal

    • Frequency Modulation (FM) - varying the frequency of the carrier signal

    • Phase Modulation (PM) - varying the phase of the carrier signal

    • Quadrature Amplitude Modulation (QAM) - combining amplitude and phase modulation

    • Pulse Amplitude Modulation (PAM) - varying the amp...

  • Answered by AI
  • Q4. What is the difference between 2G, 3G, 4G? Why 5G?
  • Ans. 

    2G, 3G, 4G, and 5G are different generations of mobile network technology.

    • 2G refers to second-generation mobile networks that primarily provided voice and text messaging services.

    • 3G introduced faster data transfer speeds, enabling internet browsing, video calling, and multimedia services.

    • 4G further improved data speeds, offering high-quality video streaming, online gaming, and advanced mobile applications.

    • 5G is the fif...

  • Answered by AI
  • Q5. Questions regarding my projects which were based on radar.
  • Q6. How to remove elements from list?
  • Ans. 

    To remove elements from a list, use the remove() method or list comprehension.

    • Use the remove() method to remove a specific element from the list.

    • Use list comprehension to remove multiple elements based on a condition.

    • Example: myList.remove('element') or myList = [x for x in myList if x != 'element']

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Ericsson Graduate Engineer interview:
  • Wireless Communication
  • Python

Skills evaluated in this interview

Vodafone Idea Interview FAQs

How many rounds are there in Vodafone Idea Graduate Engineer interview?
Vodafone Idea interview process usually has 3-4 rounds. The most common rounds in the Vodafone Idea interview process are One-on-one Round, Resume Shortlist and Aptitude Test.
What are the top questions asked in Vodafone Idea Graduate Engineer interview?

Some of the top questions asked at the Vodafone Idea Graduate Engineer interview -

  1. What is wavelength and explain ...read more
  2. What is frequencyand explain i...read more
  3. What is pulse code modulat...read more

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Vodafone Idea Graduate Engineer Interview Process

based on 3 interviews

Interview experience

4.3
  
Good
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Vodafone Idea Graduate Engineer Salary
based on 63 salaries
₹4.2 L/yr - ₹6 L/yr
5% less than the average Graduate Engineer Salary in India
View more details

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based on 17 reviews

3.2/5

Rating in categories

2.9

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3.2

Work-life balance

2.9

Salary

3.6

Job security

3.1

Company culture

2.9

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2.9

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