I applied in-person. The process took 2+ months. I interviewed at Ciena (Hong Kong) in Feb 2018
Interview
HR interview and follow up with some interviews with the regional leaders. It could take a few weeks to complete the whole interview process. After all regional interview, HR will come back for compensation discussions.
Interview questions [1]
Question 1
What is your Best practice of simulation ? the focus is about how you simulate a network in a real environment
I applied online. I interviewed at Ciena (Gurgaon, Haryana) in Mar 2015
Interview
2 rounds for technical and 1 for HR. You would be called for face to face if shortlisted by HR team and then it may be telephonic based on availablity.