I had asked a friend for a referral.

I got a call from the manager a day later. He told me about what positions they were looking for and what my interests were. He asked me a few networking questions, like what a VLAN is, etc., just to gauge me.

I got a call for an interview the next day. Questions were about what the MAC addresses will look like in a packet sent via a gateway router. What is a Proxy ARP? Then there were questions on scripting.

Since I did not know Perl at that time, they asked me questions from Shell and Python (which I knew). The emphasis was on whether I can code, not on which language I knew.

Questions weren't really unexpected. I had configured networks between a couple of routers before, so I found the questions easy enough.