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Lumen Technologies Network Engineer Interview Questions and Answers

Updated 20 Jun 2023

Lumen Technologies Network Engineer Interview Experiences

2 interviews found

Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Technical questions such as VLAN, Routing and Firewalls
Round 2 - Behavioral 

(1 Question)

  • Q1. How the team collaboration to improve business.
Round 3 - HR 

(1 Question)

  • Q1. Company details and salary negotiation.

Interview Preparation Tips

Interview preparation tips for other job seekers - For freshers be thorough with basic technical stuffs like vlan, routing, DHCP, DNS.
As a experienced, go through more technical and scenario based questions.

I applied via Referral and was interviewed before Feb 2017. There was 0 interview round.

Interview Preparation Tips

General Tips: For Networking, they usually check the resume stuff and ask you questions on which protocols/technologies you have worked
Having certifications make a huge difference to stand out in the crowd
Skills: Wireless Communication, Cisco Certified Network Professional (CCNP)
Duration: 1-4 weeks

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Interview questions from similar companies

I applied via Campus Placement and was interviewed before Dec 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Basic Questions of OS, OOPs Conepts, datastructures and Algorithms

Interview Preparation Tips

Interview preparation tips for other job seekers - Learn every topic thoruoghly, they ask little of everything for internship

I applied via Company Website and was interviewed in Jun 2020. There were 6 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Everything from resume only
  • Q2. Recursive programs, factorial, prime numbers, Armstrong numbers
  • Q3. Time complexity
  • Q4. Microservices, rest API, gateway

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview experience has been extremely warm and beautiful. All rounds finished on a single day. Which is the most great thing about being interviewed. No such tension of just waiting for results and how many rounds. Everything was super clear cut mentioned before in hand by HR. Also Hr people, I have never seen such supportive and helpful hr in my career till now. No attitude that u feel insulted of contacting them. U can easily reach out to them. It's a worthy excellent experience!

I applied via Campus Placement and was interviewed before Aug 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 tips
Round 2 - Coding Test 

2 coding questions and a set of mcq questions based on oops, dbms, networking and os

Round 3 - Technical 

(2 Questions)

  • Q1. Reverse a linked list
  • Ans. 

    Reverse a linked list

    • Iteratively swap the next and previous pointers of each node

    • Use three pointers to keep track of the current, previous, and next nodes

    • Update the head pointer to the last node after reversing

  • Answered by AI
  • Q2. What is the point of BST?
  • Ans. 

    BST is a data structure used for efficient searching, insertion and deletion of elements in a sorted manner.

    • BST stands for Binary Search Tree.

    • It has a root node and every node has at most two children.

    • The left subtree of a node contains only nodes with keys lesser than the node's key.

    • The right subtree of a node contains only nodes with keys greater than the node's key.

    • BST allows for efficient searching, insertion and d...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Work hard. Learn from your mistakes. It is okay to lose sometimes.

Skills evaluated in this interview

I applied via Campus Placement and was interviewed before Jan 2021. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. What are he layers of the OSI model?
  • Ans. 

    The OSI model has 7 layers that define how data is transmitted over a network.

    • Layer 1: Physical - deals with the physical connection of devices

    • Layer 2: Data Link - responsible for error-free transfer of data between devices

    • Layer 3: Network - handles routing of data between different networks

    • Layer 4: Transport - ensures reliable delivery of data between applications

    • Layer 5: Session - establishes and manages connections ...

  • Answered by AI
  • Q2. There are seven layers in OSI model
  • Ans. 

    Yes, there are seven layers in the OSI model.

    • The seven layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

    • Each layer has a specific function and communicates with the layers above and below it.

    • The OSI model is used to standardize communication between different computer systems.

    • Examples of protocols that operate at each layer include Ethernet at the Data Link layer and HTTP at t

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview was very nice and they asked all related questions.

Skills evaluated in this interview

I appeared for an interview in Jul 2017.

Interview Questionnaire 

1 Question

  • Q1. What is your favorite day
  • Ans. 

    My favorite day is Sunday because it's a day of relaxation and spending time with loved ones.

    • I enjoy sleeping in and having a leisurely breakfast on Sundays.

    • I like to spend time outdoors or engage in hobbies on Sundays.

    • Sunday is a day for family gatherings and quality time with loved ones.

  • Answered by AI

Interview Preparation Tips

Round: Technical Interview
Experience: Any thoughts
Tips: No

Round: Test
Experience: Any thoughts
Tips: No
Total Questions: 20

Round: Test
Experience: No
Tips: No
Duration: 1 hour
Total Questions: 20

Interview Preparation Tips

Round: PRE placement
Experience: Was accepted through the pre placement offer after a satisfactory internship during the summer.
There was a small test after the internship. Work done in the internship in co-ordination with mentor, employees and manager has more weight-age.

General Tips: Just brush up on your fundamentals. The questions asked will just be a direct or indirect applications of what you have learnt. Good programming practice is also needed.
Good knowledge about Operating systems, Data structures, Networking and Programming is what they generally look for while hiring.
A good internship project helped in securing the PPO.
Skills:
College Name: NIT Surathkal

I applied via Campus Placement and was interviewed in Dec 2016. There were 3 interview rounds.

Interview Questionnaire 

10 Questions

  • Q1. Write a program to reverse a n integer
  • Ans. 

    Program to reverse an integer

    • Convert the integer to a string

    • Reverse the string

    • Convert the reversed string back to an integer

  • Answered by AI
  • Q2. Explain me about your projects
  • Ans. 

    I have worked on various projects including a web application for inventory management and a mobile app for task tracking.

    • Developed a web application using React for inventory management, allowing users to track stock levels and generate reports.

    • Created a mobile app using Flutter for task tracking, enabling users to create, assign, and track tasks in real-time.

    • Collaborated with a team of developers to integrate APIs an...

  • Answered by AI
  • Q3. Are you interstedoing in studying further
  • Ans. 

    Yes, I am interested in studying further to enhance my skills and knowledge in software engineering.

    • Interested in pursuing a Master's degree in Computer Science

    • Enrolling in online courses to learn new technologies and programming languages

    • Attending workshops and conferences to stay updated with industry trends

  • Answered by AI
  • Q4. Reverse a linked list without using extra memory
  • Ans. 

    Reverse a linked list without using extra memory

    • Iterate through the linked list and change the next pointers to reverse the list

    • Use three pointers - prev, current, and next - to keep track of the reversed list

    • Start with prev and current pointing to null and the head of the linked list respectively

    • While traversing the list, update the next pointer of the current node to point to the previous node

    • Move prev and current po...

  • Answered by AI
  • Q5. Explain me about all the data structures you know, tell me their advantages over others and applications
  • Ans. 

    Data structures are fundamental concepts in software engineering that organize and store data efficiently.

    • Arrays: Simple and efficient for storing and accessing elements.

    • Linked Lists: Dynamic and flexible, efficient for insertion and deletion.

    • Stacks: LIFO structure, useful for managing function calls and undo operations.

    • Queues: FIFO structure, ideal for managing tasks and scheduling.

    • Trees: Hierarchical structure, used ...

  • Answered by AI
  • Q6. What is the difference between into arr [5] and malloc (5*sizeof (int))
  • Ans. 

    The difference is that 'int arr[5]' creates an array on the stack, while 'malloc(5*sizeof(int))' allocates memory on the heap.

    • int arr[5] creates an array of 5 integers on the stack, which is a fixed-size memory allocation.

    • malloc(5*sizeof(int)) dynamically allocates memory on the heap, allowing for variable-size memory allocation.

    • The memory allocated with malloc must be explicitly freed with free() to avoid memory leaks

  • Answered by AI
  • Q7. Tell me about yourself.
  • Ans. 

    I am a passionate software engineer with a strong background in computer science and experience in developing innovative solutions.

    • Completed a Bachelor's degree in Computer Science from XYZ University

    • Proficient in programming languages such as Java, Python, and C++

    • Worked on various projects including a mobile app for tracking fitness goals

    • Familiar with Agile development methodologies and version control systems like Gi

  • Answered by AI
  • Q8. Where do you want to see yourself in 5 years
  • Ans. 

    In 5 years, I see myself as a senior software engineer leading a team of developers on innovative projects.

    • Continuing to enhance my technical skills and knowledge through ongoing learning and certifications

    • Taking on more leadership responsibilities and mentoring junior team members

    • Contributing to the development of cutting-edge software solutions for the company

    • Possibly pursuing opportunities for advancement within the...

  • Answered by AI
  • Q9. Mention two weakness es
  • Ans. 

    I tend to overthink details and can be overly critical of my own work.

    • Overthinking details can lead to delays in completing tasks

    • Being overly critical can hinder progress and confidence

  • Answered by AI
  • Q10. Are you intersted in studying further
  • Ans. 

    Yes, I am interested in studying further to enhance my skills and stay updated with the latest technologies.

    • I believe continuous learning is essential in the fast-paced tech industry

    • Further studies can help me specialize in a specific area of software engineering

    • Advanced degrees or certifications can open up new career opportunities

  • Answered by AI

Interview Preparation Tips

Round: Technical Interview
Experience: Asked me few simple questions related to OS and Network security

Round: Technical Interview
Experience: Asked me few simple questions related to OS and Network security

College Name: IIT Madras

Skills evaluated in this interview

I appeared for an interview before Mar 2021.

Round 1 - Face to Face 

(3 Questions)

Round duration - 40 minutes
Round difficulty - Easy

Technical round with questions based on DSA.

  • Q1. 

    Reverse a Number Problem Statement

    Create a program to reverse a given integer N. The output should be the reversed integer.

    Note:

    If a number has trailing zeros, their reversed version should not inclu...

  • Ans. 

    Reverse a given integer while excluding trailing zeros.

    • Create a program to reverse the given integer by converting it to a string and then reversing it.

    • Remove any trailing zeros from the reversed string before converting it back to an integer.

    • Handle the constraints of the input integer being between 0 and 10^8.

    • Example: For input 1230, the output should be 321.

  • Answered by AI
  • Q2. 

    Reverse a Linked List Problem Statement

    You are given a Singly Linked List of integers. Your task is to reverse the Linked List by changing the links between nodes.

    Input:

    The first line of input contai...
  • Ans. 

    Reverse a given singly linked list by changing the links between nodes.

    • Iterate through the linked list and reverse the links between nodes.

    • Use three pointers to keep track of the current, previous, and next nodes.

    • Update the links while traversing the list to reverse it.

    • Return the head of the reversed linked list.

  • Answered by AI
  • Q3. What is the difference in C++ between 'new int[5]' and 'malloc(5 * sizeof(int))'?
  • Ans. 

    new int[5] is C++ specific and initializes the array with default values, while malloc(5 * sizeof(int)) is a C function and does not initialize the array.

    • new int[5] is C++ specific and calls constructors for each element in the array.

    • malloc(5 * sizeof(int)) is a C function and does not call constructors, leaving the array uninitialized.

    • new int[5] returns a pointer to the first element of the array, while malloc(5 * siz...

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAJuniper Networks interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, OS, Networking, Aptitude, OOPSTime required to prepare for the interview - 4 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 interviewRejected

Skills evaluated in this interview

Lumen Technologies Interview FAQs

How many rounds are there in Lumen Technologies Network Engineer interview?
Lumen Technologies interview process usually has 4 rounds. The most common rounds in the Lumen Technologies interview process are Resume Shortlist, Technical and Behavioral.
How to prepare for Lumen Technologies Network Engineer 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 Lumen Technologies. The most common topics and skills that interviewers at Lumen Technologies expect are DWDM, Network Planning, Networking, Routing and SDH.

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Lumen Technologies Network Engineer Interview Process

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Lumen Technologies Network Engineer Salary
based on 51 salaries
₹4.5 L/yr - ₹10 L/yr
38% more than the average Network Engineer Salary in India
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Lumen Technologies Network Engineer Reviews and Ratings

based on 12 reviews

3.9/5

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3.8

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3.9

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3.8

Job security

3.9

Company culture

3.4

Promotions

3.6

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