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Ericsson NOC Engineer Interview Questions, Process, and Tips for Freshers

Updated 24 May 2024

Top Ericsson NOC Engineer Interview Questions and Answers for Freshers

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Ericsson NOC Engineer Interview Experiences for Freshers

2 interviews found

NOC Engineer Interview Questions & Answers

user image Anonymous

posted on 16 Mar 2022

I applied via Naukri.com and was interviewed in Feb 2022. There were 3 interview rounds.

Round 1 - HR 

(1 Question)

  • Q1. Tell me about yourself.
  • Ans. 

    I am an experienced NOC Engineer with a strong background in network operations and troubleshooting.

    • I have a Bachelor's degree in Computer Science.

    • I have worked for 5 years in a large telecommunications company, managing and monitoring network infrastructure.

    • I am skilled in using network monitoring tools such as SolarWinds and Wireshark.

    • I have experience in troubleshooting network issues, analyzing logs, and implementi...

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. What is modulation, tcp/ip, guard band.
  • Ans. 

    Modulation is the process of varying a signal's characteristics to transmit information. TCP/IP is a protocol used for communication between devices. Guard band is a frequency band used to separate two channels.

    • Modulation is used in radio communication to transmit information by varying the amplitude, frequency, or phase of a carrier wave.

    • TCP/IP is a set of protocols used for communication between devices on a network....

  • Answered by AI
Round 3 - Technical 

(1 Question)

  • Q1. What is 2g, 3g,4g explain
  • Ans. 

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

    • 2G stands for second generation and is based on digital technology. It allows for basic voice and text communication.

    • 3G stands for third generation and introduced mobile data and internet connectivity.

    • 4G stands for fourth generation and offers faster internet speeds and improved data transfer rates.

    • Examples of 2G networks include GSM and CDMA. Exampl...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Study throughly the telecom topic and should have good communication skills in English.

Skills evaluated in this interview

NOC Engineer Interview Questions & Answers

user image Anonymous

posted on 13 Jan 2022

I applied via Recruitment Consultant and was interviewed in Jul 2021. There were 3 interview rounds.

Interview Questionnaire 

6 Questions

  • Q1. Self Introduction includes hobbies, family members, interests, academics details, achievements if any.
  • Q2. Technical Part include basic knowledge on Telecommunication and Mobile Evolution (2G,3G,4G&5G) ?
  • Q3. What do you know about GSM architecture and the interface of connectivity, OSI Model and layers (function of each layer) ?
  • Ans. 

    GSM architecture includes multiple layers of OSI model for connectivity. Each layer has a specific function.

    • GSM architecture consists of physical, data link, network, transport, and application layers.

    • Physical layer handles the transmission of bits over the air interface.

    • Data link layer provides error-free transmission of data frames.

    • Network layer handles routing and addressing of data packets.

    • Transport layer ensures r...

  • Answered by AI
  • Q4. What are Modulation Technique ?
  • Ans. 

    Modulation techniques are used to encode information onto a carrier signal for transmission over a communication channel.

    • Modulation techniques vary in terms of the type of carrier signal used (analog or digital), the type of modulation (amplitude, frequency, phase), and the complexity of the modulation scheme.

    • Examples of modulation techniques include amplitude modulation (AM), frequency modulation (FM), phase modulatio...

  • Answered by AI
  • Q5. What is DHCP and its Importance ?
  • Ans. 

    DHCP stands for Dynamic Host Configuration Protocol. It is a network protocol that assigns IP addresses to devices on a network.

    • DHCP automates the process of assigning IP addresses to devices on a network.

    • It helps to avoid IP address conflicts and makes it easier to manage a large network.

    • DHCP also provides other network configuration information, such as subnet mask and default gateway.

    • Without DHCP, network administra...

  • Answered by AI
  • Q6. Difference between GSM and CDMA ?
  • Ans. 

    GSM and CDMA are two different technologies used in mobile communication.

    • GSM uses SIM cards while CDMA does not.

    • GSM allows for easy switching of phones while CDMA does not.

    • GSM has better international roaming capabilities than CDMA.

    • CDMA has better call quality and network capacity than GSM.

    • GSM is more widely used globally while CDMA is mostly used in the US and parts of Asia.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - One situation based question may also be asked by Operational Manager, I would suggest to be confident and prepare well about telecommunication and know well about Ericsson, their working ways, and on which technology they are working on.
The interview was more of technical one but they also test your communication skills. My interview was lasted 25-30 min only, there were 3 rounds. It was my first offcampus interview as a fresher. Go through the job description thoroughly as they may ask that what do you understand about your job role mentioned in your interview mail.

Skills evaluated in this interview

NOC Engineer Interview Questions Asked at Other Companies for Fresher

asked in Ericsson
Q1. What do you know about GSM architecture and the interface of conn ... read more
Q2. What is ARP? / Telnet /SSH port no What is stp and define stp Fla ... read more
asked in Ericsson
Q3. What is DHCP and its Importance ?
Q4. How you can resolve T.T if any error occurred. Ex. Temperature is ... read more
asked in Ericsson
Q5. What are Modulation Technique ?

Interview questions from similar companies

Interview Questionnaire 

1 Question

  • Q1. How to design whats up like system?
  • Ans. 

    Designing a messaging system like WhatsApp

    • Choose a reliable and scalable backend technology like Node.js

    • Implement end-to-end encryption for secure communication

    • Use push notifications for real-time messaging

    • Allow users to create groups and broadcast messages

    • Provide features like voice and video calling

    • Ensure data privacy and compliance with regulations

    • Design a user-friendly interface for easy navigation

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - the interview was not tuff

Skills evaluated in this interview

I applied via Referral and was interviewed in Nov 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. MPLS, OSPF, BGP, ISIS

Interview Preparation Tips

Interview preparation tips for other job seekers - Never fake

I applied via Naukri.com and was interviewed in Sep 2020. There were 4 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. How to integrate the sites or the integration steps?
  • Ans. 

    Integration of sites involves identifying the systems to be integrated, defining the data flow, and implementing the integration process.

    • Identify the systems to be integrated

    • Define the data flow between the systems

    • Choose the appropriate integration method (API, ETL, etc.)

    • Develop and test the integration process

    • Deploy the integration process and monitor for errors

    • Ensure data security and compliance

    • Provide ongoing suppor

  • Answered by AI
  • Q2. What vlan?
  • Ans. 

    VLAN stands for Virtual Local Area Network and is used to logically separate a network into smaller segments.

    • VLANs are used to improve network performance and security.

    • They allow for better network management and easier troubleshooting.

    • VLANs can be configured on switches and routers.

    • Examples of VLANs include separating guest and employee networks or separating different departments within a company.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Listen carefully to interviwer & tell the answers with confidently.

Skills evaluated in this interview

I appeared for an interview before May 2016.

Interview Preparation Tips

College Name: GPREC kurnool

I appeared for an interview in Mar 2017.

Interview Questionnaire 

5 Questions

  • Q1. Related to semiconductors, processors etc. were asked.
  • Q2. Strength
  • Q3. Weaknesses
  • Q4. Hobbies
  • Q5. If there are 200 fishes in an aquarium. 99% are red. How many fishes have to be removed to make the red fishes 98 % in the aquarium?
  • Ans. 

    To make the red fishes 98%, 50 fishes have to be removed from the aquarium.

    • Calculate 1% of 200 fishes to find the number of red fishes.

    • Subtract the number of red fishes from 200 to find the number of non-red fishes.

    • Calculate 2% of the total number of fishes to find the desired number of red fishes.

    • Subtract the desired number of red fishes from the current number of red fishes to find the number of fishes to be removed.

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: There were 40 aptitude questions of variable difficulty. More questions revolved around topics like time and work, distance, speed, time, profit loss, age etc.
Tips: A regular and prior preparation will go a long way in determining a good test score.
Use tricks to solve the questions and calculations should be fast.
Duration: 30 minutes
Total Questions: 40

Round: Test
Experience: The questions weren't that tough when it came to programming. An example would be conversion of temperature from Celsius to Fahrenheit and vice versa. This was a question in my paper. So I'm hoping the difficulty would be more or less the same.
Tips: Do certified programming courses. They help you a lot in cracking good jobs.
Duration: 45 minutes
Total Questions: 3

Round: Puzzle Interview
Tips: This can be tough if you can't imagine scenarios and situations. So make sure you inculcate critical problem solving thinking in your everyday life. I feel that's the best way to do things in this round.

Round: Technical Interview
Experience: This was a short interview so not much happened.
Tips: Whatever you do just know your stuff properly.

Round: HR Interview
Experience: It was a simple interview. Basic questions and their basic answers helped me get through it.
Tips: The tip would be to stay positive in your approach while answering the questions

Skills: Technical Skill, Interpersonal Communication, Aptitude
College Name: VIT Vellore

I appeared for an interview in Mar 2017.

Interview Questionnaire 

5 Questions

  • Q1. Related to semiconductors, processors etc. were asked.
  • Q2. Weaknesses
  • Q3. Strength
  • Q4. Hobby
  • Q5. If there are 200 fishes in an aquarium. 99% are red. How many fishes have to be removed to make the red fishes 98 % in the aquarium?
  • Ans. 

    To make the red fishes 98%, 50 fishes have to be removed from the aquarium.

    • Calculate 1% of 200 fishes to find out how many fishes represent 1%.

    • Multiply the result by 2 to find out how many fishes represent 2%.

    • Subtract the result from 200 to find out how many fishes represent 98%.

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: There were 40 aptitude questions of variable difficulty. More questions revolved around topics like time and work, distance, speed, time, profit loss, age etc.
Tips: A regular and prior preparation will go a long way in determining a good test score.
Use tricks to solve the questions and calculations should be fast.
Duration: 30 minutes
Total Questions: 40

Round: Test
Experience: The questions weren't that tough when it came to programming. An example would be conversion of temperature from Celsius to Fahrenheit and vice versa. This was a question in my paper. So I'm hoping the difficulty would be more or less the same.
Tips: Do certified programming courses. They help you a lot in cracking good jobs.
Duration: 45 minutes
Total Questions: 3

Round: Puzzle Interview
Tips: This can be tough if you can't imagine scenarios and situations. So make sure you inculcate critical problem solving thinking in your everyday life. I feel that's the best way to do things in this round.

Round: Technical Interview
Experience: This was a short interview so not much happened.
Tips: Whatever you do just know your stuff properly.

Round: HR Interview
Experience: It was a simple interview. Basic questions and their basic answers helped me get through it.
Tips: The tip would be to stay positive in your approach while answering the questions

Skills: Technical Skill, Interpersonal Communication, Aptitude
College Name: VIT Vellore

Interview Questionnaire 

6 Questions

  • Q1. Suppose you are recruited as an ECE engineer in IRCTC. Your job is to stop the train accidents that happen every now and then. Use your Applied Electronics to construct a scheme/plan. Tell me how will you ...
  • Ans. 

    Using Applied Electronics to prevent train accidents in IRCTC

    • Implement sensors to detect obstacles on tracks

    • Use GPS and communication systems to alert train drivers of potential dangers

    • Install automatic braking systems in case of emergency

    • Regular maintenance and inspection of tracks and trains

    • Train and educate staff on safety protocols and emergency procedures

  • Answered by AI
  • Q2. Explain the working of IC 555 timer
  • Ans. 

    IC 555 timer is a versatile timer IC used in various applications like oscillators, timers, and flip-flops.

    • IC 555 timer has three modes of operation: monostable, astable, and bistable.

    • In monostable mode, the output is high for a fixed duration when triggered.

    • In astable mode, the output oscillates between high and low states.

    • In bistable mode, the output remains in either high or low state until triggered.

    • IC 555 timer ca...

  • Answered by AI
  • Q3. How internet works, Network model etc
  • Ans. 

    The internet is a global network of interconnected devices that communicate using standardized protocols.

    • The internet is based on the TCP/IP protocol suite.

    • Data is transmitted in packets across the network.

    • The network model consists of layers, including the physical, data link, network, transport, and application layers.

    • Routing protocols are used to direct packets to their destination.

    • Examples of internet applications ...

  • Answered by AI
  • Q4. General question from my CV
  • Q5. Tell me about yourself
  • Ans. 

    I am a software engineer with experience in developing web and mobile applications using various programming languages and frameworks.

    • Proficient in Java, Python, and JavaScript

    • Experience with React, Angular, and Node.js

    • Strong understanding of database management systems

    • Passionate about learning new technologies and solving complex problems

  • Answered by AI
  • Q6. Family, Schooling, Interests

Interview Preparation Tips

Round: Test
Experience: It was 2.5 hour long AMCAT test comprising of Quant, Verbal ability, analytic ability, technical section comprising questions from C, DSA and other computer fundamentals.
The test is not that difficult so the cutoff generally goes high
Duration: 150 minutes

Round: Technical Interview
Experience: Started with a formal "Tell me about yourself". While I continued for 2 minutes, he read my CV word to word. Since I had always been interested in programming and so it was my strong point. But he didn't even ask my area of interest and directly asked me question from core electronics that too application based. The questions were like this:
1. "Suppose you are recruited as an ECE engineer in IRCTC. Your job is to stop the train accidents that happen every now and then. Use your Applied Electronics to construct a scheme/plan. Tell me how will you proceed?"
I was literally stunned at such a question. However I took some seconds to think and gave him 2-3 answers all applying the idea in one way or the other. Like use of modern sensors, RADAR technology, Use of automated baricates at crossings and explained it to him. He wasn't fully convinced but somehow I was able to do OK.
After that i told him that I was more comfortable in programming and computer science subjects. he neglected this altogether and kept asking me ECE questions. Next questions were like "Explain the working of IC 555 timer." I told him straight away that I didn't know it very well.
After this he moved on to ask me the difference between GSM and CDMA technology, how mobile phones work and the whole concept of cellular telephony. I had prepared well for it and told him even more than he was expecting so he was quite pleased to hear it.
Next were some questions from computer networks like how internet works, Network model etc. I told him I was studying CN currently so i gave him the basics of OSI model explaining briefly each of the 7 layers. Also told him about sub-nets, sub-net masks etc.
After this he asked me some general question from my CV about my achievements like KVPY scholarship, NTSE scholarship and about my research paper. I explained it to him to the best I could. Then I asked a couple questions from my side and this interview was over. The whole process took around 35-40 minutes.
Tips: For technical, have a solid command over all the fundamentals of important subjects. You need to start early. 3rd year is a good time to plan and start your preparation. In your summer holidays before 7th semester, don't focus your full attention on your training. It is also important but you need to take out some extra time for aptitude building, revising concepts and enhancing your communication skills. Be confident and be honest. Try to make the conversation as interesting as possible. Try to be more interested in the company. If possible, do a little homework about the company visiting your college. It will prove to be useful and certainly will give you an edge above others.

Round: HR Interview
Experience: It had hardly been 15 minutes after the completion of my technical interview and I was called for the HR round. Again it started with “tell me about yourself” but this time the lady asked me everything about my family, my schooling, my interests and all. It was a really good 30 minutes spent as the conversation was really interesting. Then she asked me whether I had any problems in relocation. Then it led to a good discussion about how is life different in Hyderabad and Chennai. I asked her a little bit about her education and how she started a formal career in management. She was very happy to respond. Lastly, there were some concluding remarks, a formal thank you and the interview was over.
Tips: Make the interview as interactive as possible. Ask a lot of questions. The person should know that you are really interested in the company. Prepare good answers for HR round well in advance.Any extracurricular activities that you have been a part of may come up in the HR/Managerial round. I was asked what have you done in your college life so far other than studies. I had a lot to say in that matter as i was involved in dramatics, debating, quizzing and other activities right from the school level. They may be interested to know how efficiently have you handled any complex or challenging situations in your life. I was the Event Executive of Fashion Show "PANACHE" in BLITZSCHLAG'13. I explained to HR what all I did to make that event a success and she was really impressed with it.

General Tips: CGPA matters. Not always but definitely it's a point worth considering when the interviewers are confused even after the completion of all the rounds about which students to select.Although not specific to this company, but other companies give a lot of credit to CGPA. It is an important factor along with the 1st written round for the shortlisting of candidates.So, maintain as good a CGPA as you can.In your technical interview you are going to be asked about at least one project that you have been involved in your college life. If some project is mentioned in your CV, it is certain that the interviewer will ask you about it. I have seen discussions as long as 1 hour or more on one's project itself.
College Name: NIT JAIPUR

Skills evaluated in this interview

Interview Questionnaire 

1 Question

  • Q1. Solve a magic cube

Interview Preparation Tips

Round: Test
Experience: Aptitude test was taken on aspiring minds and name of the test series was AMCAT.600 students gave the exam and 90 were selected for the GD.
There were four sections and each section had a minimum number of questions to be attempted and there was no negative marking.Navigation among questions and sections were not allowed so use you time and mind carefully.
Section 1 - Quants
Section 2 - Verbal Ability and Critical Reasoning
Section 3 - Logical Reasoning
Section 4 - Programming and Computer Science
Tips: Speed is the key.key. Quants are easier they test only the speed of the candidate.I think the programming section has the max weight age so try to focus on that section and try to score maximum marks in that section. Programming questions were tough and there were questions from a wide range of subjects Networking , Algorithms ,Data Structures , Java, C/C++, Operating Systems,Advanced Databases etc.


Round: Group Discussion
Experience: Group discussion was very ordinary and easy to crack if you have the right content and suitable examples and clear and crisp communication skills.I took the against side of the issue which only 2 out of 10 members did and I was very bold and effective with my statements and defended my stance effectively.
Tips: Give examples,Be bold and clear and crisp .
Duration: 25 minutes

Round: HR Interview
Experience: My HR interview started at around 11pm in the night so it was very chilled out.He asked me about what excites me , why verizon , what projects I have done and what role I've played it them.He asked about my college life ? What do we study ? Why do you want to work for a MNC rather then a startup? and many more general questions which I don't remember because my interview was very chilled out. I was having fun.I asked him a lot of questions about job profile and company and many of their products so he was impressed with me.
Tips: Please do a detailed survey of the work that the company does and have knowledge about the sector and SDLC.

Round: Puzzle Interview
Experience: I was given a 3*3 and 5*5 magic cube to solve.I tried a lot of times and it took nearly 15-20 minutes to solve both the questions correctly.He asked my approach I said politely Hit and Trial and then he said to me there's a shortcut and he told me a very nice and quick trick to solve the magic cube.

Round: Technical Interview
Experience: Basic programming questions were asked about patterns, strings and some algorithms like quick sort and merge sort.
Major tough and difficult questions were asked on databases and advanced databases in oracle.He asked many questions about the projects that I've done.In depth questions regarding projects were asked.He asked questions about various things used in web application and may question regarding MySql and Tables and JOINS.
Tips: Keep your calm even if you don't know any answer. I couldn't answer to one question of databases which carried our discussion on that questions for around 10 mins but still I couldn't answer the question and in the end I asked just out of curiosity that I want to know the answer to the question and he explained me the concept perfectly.

Skills: Programming, Databases, Communication Skills, Software Development Life Cycle
College Name: SRM University

Ericsson Interview FAQs

How many rounds are there in Ericsson NOC Engineer interview for freshers?
Ericsson interview process for freshers usually has 3 rounds. The most common rounds in the Ericsson interview process for freshers are Technical and HR.
How to prepare for Ericsson NOC Engineer interview for freshers?
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 Ericsson. The most common topics and skills that interviewers at Ericsson expect are CCNA, Customer Service, Linux Administration, Microsoft Power BI and Stakeholder Management.
What are the top questions asked in Ericsson NOC Engineer interview for freshers?

Some of the top questions asked at the Ericsson NOC Engineer interview for freshers -

  1. What do you know about GSM architecture and the interface of connectivity, OSI ...read more
  2. What is DHCP and its Importanc...read more
  3. What are Modulation Technique...read more

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Ericsson NOC Engineer Salary
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₹2 L/yr - ₹7 L/yr
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