job screening question

William McCall william.mccall at
Sun Jul 8 19:57:34 UTC 2012

On Sun, Jul 8, 2012 at 2:23 PM, Jimmy Hess <mysidia at> wrote:

> I'm not sure which era exactly in which you consider it legal and
> kosher to assign to a network,  but even if you relax all the rules
> that require contiguity, it is still an illegal network mask for end
> hosts, just like is;  if an applicant doesn't flag it
> out as bad/invalid subnet mask in this era,  then they might fail the
> filter,

Well, the correct answer is that it IS invalid (because the real world
routers tell us so) and this should be the only acceptable answer,
but, just to be sure, /31s are valid, can be used, and are used.

William McCall

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