Interview is good and tough Quality Questions very organized Zscaler is the leading, most innovative firm in the $35 billion market - security - and we are actively working to bring cloud computing to Internet security just like Salesforce.com did to CRM. We have amassed more than 5,000 customers - including amazing brand name customers - and more than 12 million people across more than 180 countries are protected by our systems every single day. Zscaler is uniquely positioned to take advantage of the most important trends in the computing world - the shift to cloud computing, the ubiquity of mobile devices, the coming revolution that will be brought on by the Internet of things, and perhaps most importantly the evolution of threats - which are more serious today than they have ever been before. We are growing extremely fast, which means incredible career and growth opportunities for folks looking to join our team.

They work entirely on network security. So the questions were from computer networks. If you have studied this in your semester it would be very easy. Though I wasn't shortlisted but my interview was good, i answered all the questions which were taught in our curriculum but i lag in some practical questions.For eg- tcp, udp, different ports, Smtp, etc.