job screening question

Jon Lewis jlewis at lewis.org
Fri Jul 6 01:28:16 UTC 2012


On Thu, 5 Jul 2012, William Herrin wrote:

> On Thu, Jul 5, 2012 at 8:22 PM, Owen DeLong <owen at delong.com> wrote:
>> I would use questions such as the following:
>>
>> 1.      How many end-sites can be numbered from a single /32.
>>                 (Correct answers: IPv4 - 1, IPv6 - 65,536)
>
> IPv6 - 16,777,216 to 268,435,456 :p
>
>
>> 5.      What is the reason for the 100m distance limit within an ethernet collision domain?
>
> What's an ethernet collision domain? Seriously, when was the last time
> you dealt with a half duplex ethernet?

You've never (much less recently) seen a customer misconfigure their end 
of an ethernet handoff such that you end up with duplex mismatch? 
Granted, in that case, distance is irrelevant...but it is half half-duplex 
ethernet :)

----------------------------------------------------------------------
  Jon Lewis, MCP :)           |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________




More information about the NANOG mailing list