questions asked during network engineer interview

Tue Jul 14 20:31:07 UTC 2020

On 7/14/20 1:23 PM, Scott Weeks wrote:
>
> --- mpetach at netflight.com wrote:
> From: Matthew Petach <mpetach at netflight.com>
> On Tue, Jul 14, 2020, 11:00 Ahmed elBorno <amaged at gmail.com> wrote:
>
>> I had less than two years experience.
>>
>> The interviewer asked me:
>> [...]
>> 2) If we had a 1GB file that we need to transfer between America and
>> Europe, how much time do we need, knowing that we start with a TCP size of
>> X?
>>
>
> I *love* questions like that, because I can immediately respond back with
> "well, that depends; did your sysadmin configure rfc1323 extension support
> in your TCP stack?  Is SACK enabled?  What about window scaling?  Does your
> OS do dynamic buffer tuning for TCP, or are the values locked in at start
> time?"
> ------------------------------------------------
>
>
>
> I'm not so sure someone with only 2 years experience would know that.

On the other hand, it might not be bad ask as a "what would you do if 
somebody asked you this question, what would you do research how to 
answer the question?" because this is definitely something that an 
unknowledgeable person up the management chain might ask.

Mike