Upload Button Icon Add office photos

Filter interviews by

Infinera Software Developer Interview Questions and Answers

Updated 14 Nov 2024

Infinera Software Developer Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Nov 2023. There were 2 interview rounds.

Round 1 - Coding Test 

Coding test on hackerrank

Round 2 - One-on-one 

(2 Questions)

  • Q1. Question on Tree
  • Q2. Asked to solve a few puzzles

Interview questions from similar companies

I was interviewed before Mar 2021.

Round 1 - Group Discussion 

Round duration - 15 minutes
Round difficulty - Easy

This was a group discussion round where we were divided into groups of 10 and we had 15 minutes for GD.

Round 2 - Face to Face 

(6 Questions)

Round duration - 60 minutes
Round difficulty - Medium

This is all about how good you are with the fundamentals. Out of 10 I would give it a 6.5 on difficulty.

  • Q1. 

    Reverse the String Problem Statement

    You are given a string STR which contains alphabets, numbers, and special characters. Your task is to reverse the string.

    Example:

    Input:
    STR = "abcde"
    Output:
    "e...
  • Ans. 

    Reverse a given string containing alphabets, numbers, and special characters.

    • Iterate through the string from the end to the beginning and append each character to a new string.

    • Use built-in functions like reverse() or StringBuilder in languages like Python or Java for efficient reversal.

    • Handle special characters and numbers while reversing the string.

    • Ensure to consider the constraints on the length of the string and the

  • Answered by AI
  • Q2. What is a deadlock?
  • Ans. 

    A deadlock is a situation in which two or more processes are unable to proceed because each is waiting for the other to release a resource.

    • Occurs in multitasking environments where processes compete for limited resources

    • Can be resolved using techniques like deadlock prevention, deadlock avoidance, and deadlock detection

    • Example: Process A holds Resource X and waits for Resource Y, while Process B holds Resource Y and wa

  • Answered by AI
  • Q3. What is a thread?
  • Ans. 

    A thread is a lightweight sub-process that allows concurrent execution within a single process.

    • Threads share the same memory space within a process.

    • Threads are used to achieve parallelism and improve performance.

    • Examples of threads include the main thread in a program and worker threads in a multi-threaded application.

  • Answered by AI
  • Q4. What is the difference between Multiprocessing and Multiprogramming?
  • Ans. 

    Multiprocessing involves multiple processors executing multiple tasks simultaneously, while multiprogramming involves multiple programs sharing a single processor by switching between them.

    • Multiprocessing utilizes multiple processors to execute multiple tasks concurrently.

    • Multiprogramming involves multiple programs sharing a single processor by switching between them.

    • Multiprocessing is more efficient in terms of perfor...

  • Answered by AI
  • Q5. Can you explain the process life cycle in an operating system?
  • Ans. 

    Process life cycle in an operating system involves creation, execution, termination, and resource management.

    • Creation: When a process is created, it is assigned a unique process ID and allocated necessary resources.

    • Execution: The process is then scheduled by the operating system to run on the CPU.

    • Termination: Once the process completes its task or is terminated by the user, it is removed from memory.

    • Resource Management...

  • Answered by AI
  • Q6. What are the differences between Windows XP and Windows 7?
  • Ans. 

    Windows XP and Windows 7 are both operating systems developed by Microsoft, but they have several key differences.

    • User interface: Windows 7 has a more modern and user-friendly interface compared to Windows XP.

    • Performance: Windows 7 is generally faster and more stable than Windows XP.

    • Security: Windows 7 has more advanced security features and updates compared to Windows XP.

    • Hardware support: Windows 7 supports newer hard...

  • Answered by AI
Round 3 - Face to Face 

(6 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical round with questions on DBMS and Networking mainly.

  • Q1. What is the difference between RDBMS and DBMS?
  • Ans. 

    RDBMS is a type of DBMS that stores data in a structured format with relationships between tables.

    • RDBMS enforces referential integrity and allows for normalization of data.

    • DBMS is a general term for any system that manages databases, while RDBMS specifically refers to relational databases.

    • Examples of RDBMS include MySQL, Oracle, and SQL Server.

    • Examples of DBMS include MongoDB and Redis.

  • Answered by AI
  • Q2. What is an Object-Oriented Database Management System (OODBMS)?
  • Ans. 

    An Object-Oriented Database Management System (OODBMS) is a type of database management system that supports the creation and management of objects in a database.

    • OODBMS stores data in the form of objects, which can contain attributes and methods.

    • It allows for complex data structures and relationships to be represented more easily.

    • Examples of OODBMS include db4o, ObjectDB, and ObjectStore.

  • Answered by AI
  • Q3. How do you find the number of unique values in a SQL database?
  • Ans. 

    Use the COUNT DISTINCT function in SQL to find the number of unique values in a database.

    • Use the COUNT DISTINCT function along with the column name to count the number of unique values in that column.

    • For example, SELECT COUNT(DISTINCT column_name) FROM table_name;

    • You can also use GROUP BY to find the number of unique values for multiple columns.

  • Answered by AI
  • Q4. What is the difference between a hub and a switch in networking?
  • Ans. 

    A hub operates at the physical layer and broadcasts data to all devices on the network, while a switch operates at the data link layer and forwards data only to the intended recipient.

    • Hub operates at the physical layer, while switch operates at the data link layer

    • Hub broadcasts data to all devices on the network, while switch forwards data only to the intended recipient

    • Switch is more efficient and secure compared to a

  • Answered by AI
  • Q5. Can you explain the different OSI layers?
  • Ans. 

    The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven different layers.

    • Physical Layer: Deals with the physical connection between devices. Example: Ethernet cables.

    • Data Link Layer: Responsible for node-to-node communication. Example: MAC addresses.

    • Network Layer: Manages routing of data packets. Example: IP addresses.

    • T...

  • Answered by AI
  • Q6. What are the different protocols supported at each OSI layer?
  • Ans. 

    Different protocols supported at each OSI layer

    • Layer 1 (Physical): Ethernet, Wi-Fi, Bluetooth

    • Layer 2 (Data Link): MAC, PPP, HDLC

    • Layer 3 (Network): IP, ICMP, ARP

    • Layer 4 (Transport): TCP, UDP, SCTP

    • Layer 5 (Session): NetBIOS, PPTP

    • Layer 6 (Presentation): SSL, TLS

    • Layer 7 (Application): HTTP, FTP, SMTP

  • Answered by AI
Round 4 - HR 

Round duration - 15 minutes
Round difficulty - Easy

IF you make it to the HR round you are selected. All 28 that attended got selected . It was more like stuff for formality. The usual questions.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAEricsson India interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPS, DBMS, OSTime 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 interviewSelected

Skills evaluated in this interview

Interview Preparation Tips

Skills: Networking, OS, Linux kernel
College Name: NA

Interview Questionnaire 

3 Questions

  • Q1. The questions primarily started with discussion on my internships and minor project
  • Q2. Many questions were asked about OOPs concepts like virtual function, multiple inheritance, function overloading etc you are supposed to define and implement all of them on paper
  • Q3. I was asked about my favorite subject, opted computer networks. So, was asked about computer networks basics like ISO OSI, virtual LANs, QoS, AdHoc networks, WiiMax and Wifi

Interview Preparation Tips

Round: Technical Interview
Experience: Technical continues for about 35 minutes, the questions primarily started with discussion on my internships and minor project.
Many questions were asked about OOPs concepts like virtual function, multiple inheritance, function overloading etc you are supposed to define and implement all of them on paper.
I was asked about my favorite subject, opted computer networks. So, was asked about computer networks basics like ISO OSI, virtual LANs, QoS, AdHoc networks, WiiMax and Wifi.

Round: HR Interview
Experience: I was primarily asked about my family background, likes, hobbies etc

College Name: NA

I was interviewed before Nov 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 60 minutes
Round difficulty - Medium

The test was in the evening which was not too late. It was conducted on Hackerrank which is a very common platform and was hence familiar. There were 26 questions:
Q1: Coding Question
3 languages were allowed: c, java8, python3
Q2 - Q26: Multiple Choice Questions

  • Q1. 

    Intersection of Linked List Problem

    You are provided with two singly linked lists containing integers, where both lists converge at some node belonging to a third linked list.

    Your task is to determine t...

  • Ans. 

    Find the node where two linked lists merge, return -1 if no merging occurs.

    • Traverse both lists to find the lengths and the last nodes

    • Align the starting points of both lists by moving the longer list's pointer ahead by the difference in lengths

    • Traverse both lists simultaneously until a common node is found, which is the merging point

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in BangaloreEligibility criteriaDegree & Specialisation : B.Tech (Computer Science) B.Tech (Information Technology) B.Tech (Electronics & Communication) B.Tech (Electrical & Electronics) MCA M.Sc (Computer Science), Year of Graduation : 2021, CGPA : 7.5 and above, No Current BacklogsCisco interview preparation:Topics to prepare for the interview - Data Communication and Networks, Data Structures, SQL, OOPS, C, C++, JavaTime required to prepare for the interview - 2 MonthsInterview preparation tips for other job seekers

Tip 1 : Practice competitive programming as much as possible. It's never too late. Start now. But it is important to practice before appearing for the paper.
Tip 2 : Try to start making projects early on as it plays a major role during the interviews. 
Tip 3 : Be involved in extra curricular activities and events like Hackathons even if you don't win all of them. It gives a lot of exposure and experience.
Tip 4 : Don't lose touch with your core subjects.
Tip 5 : An internship/training from a good organization always helps (though don't lose hope if you don't have it).
Tip 6 : Focus on your communication skills along with your core subjects as it helps in giving a good impression during the interviews.

Application resume tips for other job seekers

Tip 1 : Maintain a good CGPA (above 7.5)
Tip 2 : Mention your projects as they are noticed in the interview
Tip 3 : Having an internship experience especially from a good organization helps
Tip 4 : Focus on extra curricular activities too
Tip 5 : Do not put things you are not sure about

Final outcome of the interviewRejected

Skills evaluated in this interview

I was interviewed before Jan 2021.

Round 1 - Coding Test 

(1 Question)

Round duration - 70 Minutes
Round difficulty - Medium

This was an Online Coding+MCQ round where we had a total of 50 MCQ questions and 1 coding problem. The coding problem was of easy to medium level but was a bit implementation heavy.

  • Q1. 

    LRU Cache Design Question

    Design a data structure for a Least Recently Used (LRU) cache that supports the following operations:

    1. get(key) - Return the value of the key if it exists in the cache; otherw...

  • Ans. 

    Design a Least Recently Used (LRU) cache data structure that supports get and put operations with capacity constraint.

    • Implement a doubly linked list to maintain the order of recently used keys.

    • Use a hashmap to store key-value pairs for quick access.

    • When capacity is reached, evict the least recently used item before inserting a new item.

    • Update the position of a key in the linked list whenever it is accessed or updated.

    • H...

  • Answered by AI
Round 2 - Face to Face 

(3 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round had 1 coding question in which I was first required to explain my approach and then discuss the time and space complexities. After this , some basic questions from OOPS and Java were asked.

  • Q1. 

    Detect and Remove Loop in Linked List

    For a given singly linked list, identify if a loop exists and remove it, adjusting the linked list in place. Return the modified linked list.

    Expected Complexity:

    A...

  • Ans. 

    Detect and remove loop in a singly linked list in place with O(n) time complexity and O(1) space complexity.

    • Use Floyd's Cycle Detection Algorithm to identify the loop in the linked list.

    • Once the loop is detected, use two pointers to find the start of the loop.

    • Adjust the pointers to remove the loop and return the modified linked list.

  • Answered by AI
  • Q2. What is the difference between ArrayList and LinkedList in Java?
  • Ans. 

    ArrayList is implemented using a dynamic array while LinkedList is implemented using a doubly linked list.

    • ArrayList provides fast random access but slow insertion and deletion operations.

    • LinkedList provides fast insertion and deletion operations but slow random access.

    • Example: ArrayList is suitable for scenarios where frequent access and traversal of elements is required, while LinkedList is suitable for scenarios wher...

  • Answered by AI
  • Q3. What is the difference between abstraction and inheritance?
  • Ans. 

    Abstraction focuses on hiding implementation details, while inheritance allows a class to inherit properties and behavior from another class.

    • Abstraction is the concept of hiding the complex implementation details and showing only the necessary features of an object.

    • Inheritance is a mechanism where a new class inherits properties and behavior from an existing class.

    • Abstraction is achieved through interfaces and abstract...

  • Answered by AI
Round 3 - Face to Face 

(3 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round had questions from OS and OOPS. The interviewer also tested my problem solving skills by asking me some puzzles in the end.

  • Q1. Can you explain piping in Unix/Linux?
  • Ans. 

    Piping in Unix/Linux allows the output of one command to be used as the input for another command.

    • Piping is done using the | symbol

    • Multiple commands can be piped together

    • Piping allows for the creation of complex command chains

    • Example: ls -l | grep txt

  • Answered by AI
  • Q2. What is a static variable in C?
  • Ans. 

    A static variable in C is a variable that retains its value between function calls.

    • Static variables are declared using the 'static' keyword.

    • They are initialized only once and retain their value throughout the program's execution.

    • Static variables have a default value of 0 if not explicitly initialized.

    • They are stored in the data segment of the program's memory.

    • Example: static int count = 0; declares a static variable 'c

  • Answered by AI
  • Q3. How can you measure exactly 4 liters of water using only a 3-liter can and a 5-liter can?

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPACisco interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, 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 interviewSelected

Skills evaluated in this interview

I applied via Naukri.com and was interviewed before Jul 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. It's was my first job in Ericsson question being asked were linux basic nothing much

Interview Preparation Tips

Interview preparation tips for other job seekers - Well we should have good knowledge on linux python, perl, shell scripting

I applied via Recruitment Consultant and was interviewed in Sep 2020. There were 3 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. Regarding SAP Data Services
  • Q2. Designer tool, Project, wf, df, transforms, types of transforms, performance optimisation techniques etc
  • Q3. Hana

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview was good. interviewer was friendly and wherever I couldnt answer his questions he answered them and made me understand.
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Recruitment Consulltant and was interviewed in Mar 2024. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. It was problem solving round, we have to write program for few scenario's in c. like find index for given element in array. create two threads and print one number from thread1 and next number from thread2
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(2 Questions)

  • Q1. Reverse a linked list.
  • Q2. Merge sort on a array/

Infinera Interview FAQs

How many rounds are there in Infinera Software Developer interview?
Infinera interview process usually has 2 rounds. The most common rounds in the Infinera interview process are Coding Test and One-on-one Round.
How to prepare for Infinera Software Developer 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 Infinera. The most common topics and skills that interviewers at Infinera expect are C++, Linux, Python, Software Development and C.
What are the top questions asked in Infinera Software Developer interview?

Some of the top questions asked at the Infinera Software Developer interview -

  1. Asked to solve a few puzz...read more
  2. Question on T...read more

Tell us how to improve this page.

Infinera Software Developer Interview Process

based on 2 interviews

Interview experience

4.5
  
Good
View more

Fast track your campus placements

View all
Infinera Software Developer Salary
based on 14 salaries
₹11 L/yr - ₹20 L/yr
101% more than the average Software Developer Salary in India
View more details

Infinera Software Developer Reviews and Ratings

based on 2 reviews

4.5/5

Rating in categories

4.0

Skill development

4.0

Work-life balance

4.0

Salary

4.0

Job security

4.5

Company culture

3.5

Promotions

3.5

Work satisfaction

Explore 2 Reviews and Ratings
Senior Software Engineer
30 salaries
unlock blur

₹0 L/yr - ₹0 L/yr

Senior Software Development Engineer
21 salaries
unlock blur

₹0 L/yr - ₹0 L/yr

Software Development Engineer II
20 salaries
unlock blur

₹0 L/yr - ₹0 L/yr

Staff Software Engineer
18 salaries
unlock blur

₹0 L/yr - ₹0 L/yr

Staff Engineer
18 salaries
unlock blur

₹0 L/yr - ₹0 L/yr

Explore more salaries
Compare Infinera with

Ciena

4.3
Compare

Cisco

4.1
Compare

Juniper Networks

4.2
Compare

Corning Technologies

4.4
Compare
Did you find this page helpful?
Yes No
write
Share an Interview