Esther,

I  think the first question that springs to mind for me is "What does
Network Administrator mean to you?".  But this is a question that the
hiring manager needs to be asking herself as well.  I've seen jobs
listed as Network Administrators that include any/all of: Novel
Netware Administrators; Windows AD Administrators; Network Engineer
(Routing, Switching, etc.);  DNS Administrator; etc.  Sometimes its
just a Jack-of-all-trades type of position.  I personally think this
is one of the biggest failings we have in this industry.  Compare to
other industries where the terminology is well defined.  A hospital
administrator looking to hire a new podiatrist doesn't have to make
sure that the candidates all really are foot doctors...

My personal definition of Network Engineer or Network Manager
includes:  Basic networking (routing, switching, LAN and WAN
technologies and network design); Firewalls; VPN services; VOIP
services;  IP address management; DNS; DHCP; RADIUS; Network
Monitoring.

Assuming we're already on the same page as to what the terms we're
using mean, I tend to prefer open ended questions.  My favorite
question would probably be something like: "Eventually in this field
we all make mistakes.  My worst mistake was <...>.  Whats the worst
mistake you've ever personally made as a Network Administrator, and
what did you learn from it?"  I'll expect a good description of an
significant event and analysis of what went wrong and how to avoid
similar problems.  If the candidate can't think of such an event or
can't describe something without putting the blame on someone else,
I'll doubt his/her willingness to admit to mistakes on the job.

Another good question (depending on the exact position) is to ask the
candidate to describe a project they've been involved in, giving a
high level view of the entire project and a detailed description of
the work they were personally involved in.  I've successfully used
that question to weed out candidates that were applying for hands-on
technology jobs but were really hands off managers, and candidates who
seemed good on paper but when asked to describe a project were
completely unable to articulate a coherent vision of a project.


-David
 (Senior Network Engineer for a mid-sized global company.)
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