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Infinera Software Engineer Intern Interview Questions and Answers

Updated 28 Feb 2024

Infinera Software Engineer Intern Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. OOPs and Hashing related questions

Interview questions from similar companies

Interview Questionnaire 

1 Question

  • Q1. Micro services, devops, python, networking scenarios, testing scenarios

I appeared for an interview before May 2021.

Round 1 - Coding Test 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Medium

Timing: Morning
How was the environment? It happened in the Computer Lab of my institution
All students were assigned a computer and we had to solve questions on hackerrank

  • Q1. 

    Order of People Heights Problem Statement

    Consider 'N' individuals numbered from 0 to N-1 standing in a queue. You are provided with two arrays: Height and Infront, each consisting of 'N' non-negative int...

  • Ans. 

    The task is to find the actual order of people in a queue based on their heights and the number of taller people in front of them.

    • Iterate through the given arrays and create a list of tuples containing the height and number of taller people for each person.

    • Sort the list of tuples in descending order of height and ascending order of the number of taller people.

    • Create an empty result list and insert each tuple into the r...

  • Answered by AI
Round 2 - Face to Face 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Medium

Round was a mix of concepts from OOPS, OS and Problem Solving

  • Q1. 

    Binary Search Tree Value Finder

    Given a Binary Search Tree (BST) and a key value 'X', determine if there exists a node within the BST containing the value 'X'.

    Example:

    Input:
    Consider the tree represe...
  • Ans. 

    The task is to find if a given value is present in a Binary Search Tree (BST).

    • Start from the root node and compare the value with the target value.

    • If the value matches, return true.

    • If the target value is less than the current node value, move to the left child.

    • If the target value is greater than the current node value, move to the right child.

    • Repeat the process until a match is found or a leaf node is reached.

    • If a leaf...

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPANVIDIA interview preparation:Topics to prepare for the interview - Data Structures, Algorithms(basic), DBMS, Operating systems, basics of web development.Time required to prepare for the interview - 8 monthsInterview preparation tips for other job seekers

Tip 1 : Try to code the data structures that you have learned to understand things better
Tip 2 : Try to solve the problem even if it is the worst possible solution you think and then try to optimize don't jump to get the
best possible solution
Tip 3 : Discuss things among peers it helps to improve the understanding, even try to teach someone anything new you learn, this is very helpful during the interviews as you will have habit of explaining things

Application resume tips for other job seekers

Tip 1 : Try to be honest in the resume don't write something you don't know, most of the time it backfires.
Tip 2 : Try to make 2 good projects for cv and know about the challenges you can face on the project and think about how you can solve that challenge.

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Basic java mcq, Java Hibernate Spring MVC framework questions

Interview Preparation Tips

Round: Test
Experience: It was a blend of topics from IT,CSE and ECE. Try to concentrate on coding and networks for this round. mostly luck based

Round: Group Discussion
Experience: A very easy round. Can easily clear it if you have minimum skills

Round: Technical Interview
Experience: needs a sound knowledge in networking .

Round: HR Interview
Experience: your personality and the way you behave matters a lot. Try to be humble and truthful

General Tips: as I mentioned earlier keep trying never loose hope
Skills: communication skills, grasping power , knowledge
College Name: VIT VELLORE
Motivation: high package :P
Funny Moments: none . but had to go to bangalore for interview which was fun :)

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

Interview Preparation Tips

Round: Test
Experience: Tested basics in each subject

Round: Technical Interview
Experience: Had asked me about my projects in detail. Some DSA questions were asked. Asked to code in C for some questions.

Round: Technical Interview
Experience: Asked questions about data structures and some more algorithms. Tested in Probability and some quant.

College Name: IIT Madras

Interview Questionnaire 

6 Questions

  • Q1. Tell us about yourself ?
  • Q2. Any knowledge of Networks/DS?
  • Ans. 

    Yes

    • Knowledge of network protocols and architectures

    • Understanding of data structures and algorithms

    • Experience with network troubleshooting and analysis

    • Familiarity with network security and encryption

    • Proficiency in network programming and socket programming

  • Answered by AI
  • Q3. Which projects do you like the most?
  • Q4. How was your test ?
  • Ans. 

    The test went well, I was able to complete all the tasks within the given time frame.

    • I prepared well for the test by reviewing relevant materials

    • I managed my time effectively during the test

    • I was able to solve all the problems and complete all the tasks

    • I double-checked my work to ensure accuracy

  • Answered by AI
  • Q5. Why CISCO ? Tell something about it
  • Q6. Which companies have you applied for till day 4 ?

Interview Preparation Tips

Round: Test
Experience: 30 questions on Technical knowledge - Basic C, DS, Microprocessor, OS, Networks, Circuit Designs.
20 questions on Aptitude.
Total Questions: 50

Round: Technical Interview
Experience: It was a 25-30 minute round. Apart from the questions mentioned, they asked questions related to BTP(Signal Processing) and Microprocessor 8085.
Tips: Basic C, EE 370 and Microprocessor 8085 will be helpful. They will look for Networks related questions. Revise the related courses and attend PPTs.

Round: HR Interview
Experience: It was a 15-minute round.

General Tips: Analytical thinking is important and you should have good technical knowledge and a decent academic record.
College Name: IIT KANPUR

Skills evaluated in this interview

Interview Preparation Tips

Round: Resume Shortlist
Tips: It will be good to have a GPA of 8 and above

Round: Test
Experience: Questions were easy it were good at C and basic maths. Questions were distributed on all aspects of computer science such as Operating Systems, Few Output Question, Data Structures and Application layer networking . In basic aptitude most questions fall under Probability, distance and time and few others.
Duration: 60 minutes
Total Questions: 50

Skills: Communication, Basic Coding, Math Puzzle
College Name: NIT Surathkal

Interview Preparation Tips

Round: Test
Experience: The test was MCQ type. It comprised of questions from Operating Systems, Data Structures, Microprocessors, logical Reasoning, Aptitude and Computer Networks. No negative marking was there.
Tips: One needs to be fast as you can't spend much time on one question.
Duration: 60 minutes
Total Questions: 50

Round: Technical Interview
Experience: I was given 2 coding questions to solve and basics of oops, operating systems, data structures and networks were asked. 3-4 questions were asked in each topic mentions above. The interviewer also asked 2 puzzles which were the standard ones. He first asked me if I knew the topic or not, then only he asked me questions about it. But that doesn't mean that you can skip all the above mentions topics.
Tips: Be relaxed and confident and try to discuss your approach with the interviewer.

Round: Technical Interview
Experience: 2 Coding questions and 3-4 questions from operating systems and networks.Questions also from the mentioned projects.

Round: HR Interview
Experience: Standard HR interview with questions like what Cisco does and why they should hire you. He also asked me questions from the CV.

Tips: Be confident and mug up your cv well

Round: HR Interview
Experience: It was just a formality where he just asked about my background and whether I would be able to move to bangalore and Why I want to join Cisco.

Skills: Confidence, Problem Solving Skills, Operating System Basics, Coding Skills, Object Oriented Programming (OOP) Basics, Computer Networking, Data Strrutures
College Name: IIT Guwahati

I applied via Referral

Interview Questionnaire 

10 Questions

  • Q1. Program to print the elements of a binary tree in spiral order
  • Ans. 

    Program to print binary tree elements in spiral order

    • Use two stacks to keep track of nodes at odd and even levels

    • Push nodes from left to right in odd level stack and right to left in even level stack

    • Pop nodes from the stack alternatively and print them

    • Repeat until both stacks are empty

  • Answered by AI
  • Q2. Explain what happens underneath when you enter a URL in the browser
  • Ans. 

    Entering a URL in the browser triggers a series of events to retrieve and display the requested webpage.

    • The browser checks the cache for a previously stored copy of the webpage

    • If not found, the browser sends a request to the DNS server to resolve the domain name to an IP address

    • The browser then sends a request to the web server at the IP address for the webpage

    • The web server responds with the requested webpage

    • The brows...

  • Answered by AI
  • Q3. Explain why MAC addresses are required despite having IP addresses
  • Ans. 

    MAC addresses are required for identifying devices on a local network, while IP addresses are used for identifying devices on a global network.

    • MAC addresses are used for communication within a local network

    • IP addresses are used for communication across different networks

    • MAC addresses are assigned by the manufacturer and cannot be changed

    • IP addresses can be assigned dynamically or statically

    • MAC addresses are used in the...

  • Answered by AI
  • Q4. Solve the classical bridge and torch puzzle
  • Q5. Explain my internship project
  • Ans. 

    Developed a web application for tracking inventory and sales data

    • Used React.js for front-end development

    • Implemented RESTful APIs using Node.js and Express for back-end

    • Utilized MongoDB for database management

    • Integrated authentication and authorization features for secure access

    • Designed user-friendly interface with responsive design

  • Answered by AI
  • Q6. What is an arraylist in Java?
  • Ans. 

    An ArrayList is a dynamic array in Java that can grow or shrink in size during runtime.

    • ArrayList is a class in Java's Collection framework.

    • It implements the List interface and allows duplicate elements.

    • Elements can be added or removed using methods like add(), remove(), etc.

    • It can also be sorted using the sort() method.

    • Example: ArrayList names = new ArrayList<>();

    • names.add("John"); names.add("Mary"); names.remove(0);

Answered by AI
  • Q7. What is the difference between an arraylist and a linkedlist in Java?
  • Ans. 

    ArrayList is a resizable array while LinkedList is a doubly linked list.

    • ArrayList is faster for accessing elements while LinkedList is faster for adding or removing elements.

    • ArrayList uses contiguous memory while LinkedList uses non-contiguous memory.

    • ArrayList is better for random access while LinkedList is better for sequential access.

    • Example: ArrayList - List names = new ArrayList<>(); LinkedList - List names = new L

  • Answered by AI
  • Q8. “Java is not a pure OO language”. Justify (the answer expected was that the primitive types are not objects in Java!)
  • Ans. 

    Java is not a pure OO language due to primitive types not being objects.

    • Primitive types like int, boolean, etc. are not objects in Java

    • They do not have methods or inheritance like objects do

    • This violates the principle of everything being an object in pure OO languages

    • Wrapper classes like Integer, Boolean, etc. were introduced to provide object-like behavior for primitives

  • Answered by AI
  • Q9. What is the difference between an object oriented and object based language?
  • Ans. 

    Object-oriented languages support inheritance and polymorphism, while object-based languages do not.

    • Object-oriented languages allow for the creation of classes and objects, and support inheritance and polymorphism.

    • Object-based languages only support objects, but do not have the concept of classes or inheritance.

    • Examples of object-oriented languages include Java, C++, and Python, while JavaScript is an example of an obj

  • Answered by AI
  • Q10. Explain inheritance and abstraction with a concrete example
  • Ans. 

    Inheritance is a way to create new classes based on existing ones. Abstraction is a way to hide implementation details.

    • Inheritance allows a subclass to inherit properties and methods from a superclass.

    • Abstraction allows a class to provide a simplified interface to its users while hiding its implementation details.

    • For example, a Car class can inherit properties and methods from a Vehicle class, while also implementing i...

  • Answered by AI

    Interview Preparation Tips

    Skills:
    College Name: NA

    Skills evaluated in this interview

    Infinera Interview FAQs

    How many rounds are there in Infinera Software Engineer Intern interview?
    Infinera interview process usually has 1 rounds. The most common rounds in the Infinera interview process are Technical.

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