Isn't MTU discovery on IP and not TCP? On Thu, Jul 5, 2012 at 11:11 AM, Oliver Garraux <oliver@g.garraux.net>wrote:
Seems fairly straightforward to me. It'll break path MTU discovery.
I would hope someone applying for an "IP expert" position would know that.
Could HR be mangling the question or something?
Oliver
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Oliver Garraux Check out my blog: www.GetSimpliciti.com/blog Follow me on Twitter: twitter.com/olivergarraux
On Thu, Jul 5, 2012 at 1:02 PM, William Herrin <bill@herrin.us> wrote:
Hi folks,
I gave my HR folks a screening question to ask candidates for an IP expert position. I've gotten some "unexpected" answers, so I want to do a sanity check and make sure I'm not asking something unreasonable. And by "unexpected" I don't mean naively incorrect answers, I mean oh-my-God-how-did-you-get-that-cisco-certification answers.
The question was:
You implement a firewall on which you block all ICMP packets. *What* *part of the TCP protocol (not IP in general, TCP specifically)* *malfunctions as a result?*
My questions for you are:
1. As an expert who follows NANOG, do you know the answer? Or is this question too hard?
2. Is the question too vague? Is there a clearer way to word it?
3. Is there a better screening question I could pass to HR to ask and check the candidate's response against the supplied answer?
Thanks, Bill Herrin
-- William D. Herrin ................ herrin@dirtside.com bill@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
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