Mainly technical, Basics of TCP/IP networking, Scripting, Traffic tools usage, Nature of job in previous company. Testing performance and Scaling. Netconf, IPSec, OSPF,BGP,MPLS, switching, SNMP, Radius, network management process, QA process,

It was worst interview experience I have ever had. Interview has 7 rounds spanning over 3 months. All rounds were in US time zone. After last round there was no communication for 3 weeks. I called for enquiry and was informed that they don't need a staff engineer now instead they need a lower rank role. Very unprofessional company. I will suggest never waste time by appearing interview for this unprofessional organisation