I applied through a recruiter. I interviewed at Ciena (Bengaluru) in Dec 2016
Interview
Horrible Experience. Interview was scheduled in ITC Windsor hotel Bangalore. They started with a written test mostly specific to syntax and program output MCQs. They didn't have proper arrangements to take F2F interviews. They took me to smoking area where few canopies were arranged. Other hotel guests were roaming creating pathetic environment, Story doesn't ends here. They don't have enough panel members too. Interviewer was simultaneously taking several interviews. He gave me one question and left for other. By the time, i finishes he almost forgot what we discussed last time. It seems to me whole group was just interested in making numbers for interview process. They were least interested in candidate interest. Interview round lasted for 3 hrs altogether and even after giving best possible optimized solutions, i got the average feedback. I got to know same lines were told to everyone present.
I applied through college or university. I interviewed at Ciena (Gurgaon, Haryana) in Nov 2025
Interview
3 Rounds - 2 tech and 1HR.
Dsa is easy level. Oops asked in depth. Easy os
Slow fast pointers
Delete node without head
Stock buy and sell 1
Focus on oops mainly and c++ basics
Interview questions [1]
Question 1
What is the Application of runtime polymorphism? Why not just create an object using child class
I applied through college or university. The process took 1 day. I interviewed at Ciena (Pune) in Oct 2025
Interview
1st online assessment asking core subjects
CNS OS JAVA OOP C++ 30 mcqs
3 rounds 1st Technical -Dsa and Cs fundamental
Dsa easy to medium leetcode questions
Operating system was important
Oop was asked in deep
Core computer networks question
2nd - System design
3rd - Typical Hr round questions
I applied through college or university. The process took 1 day. I interviewed at Ciena (New Delhi) in Oct 2025
Interview
On Campus Oppurtunity. OA consisted mostly of fundamental questions on C++, OS, CN, Linux and Aptitude. Interview consisted of basic DSA questions and strong grip on C++ (pointers, OOPs, memory management). Also my project was OS related so many questions were around my project.
Interview questions [1]
Question 1
1. DSA (mostly around array, linkedlist, strings, bit manipulation,)
2. Pointers (very imp)
3. OS
4. OOPs (again very imp)