I applied online. The process took 3 weeks. I interviewed at Palo Alto Networks in Sep 2017
Interview
phone interview is easy just a couple of quick questions. in person interview a bit tougher than it needs to be. try to personalize yourself with your interviewers so they remember you.
Interview questions [1]
Question 1
phone: whats the difference between udp and tcp? what are the 3 parts of the ssl handshake
in person: brush up on your network routing protocols ospf, bgp, and static routing.