Common operational misconceptions

-Hammer- bhmccie at
Wed Feb 15 20:57:58 UTC 2012

Switching VS Bridging
Collision Domain VS Broadcast Domain

L2 in general is the layer that the new folks often misunderstand.

I once had someone ask me what a hub was. That pretty much told me how 
old I was....


"I was a normal American nerd"
-Jack Herer

On 2/15/2012 2:47 PM, John Kristoff wrote:
> Hi friends,
> As some of you may know, I occasionally teach networking to college
> students and I frequently encounter misconceptions about some aspect
> of networking that can take a fair amount of effort to correct.
> For instance, a topic that has come up on this list before is how the
> inappropriate use of classful terminology is rampant among students,
> books and often other teachers.  Furthermore, the terminology isn't even
> always used correctly in the original context of classful addressing.
> I have a handful of common misconceptions that I'd put on a top 10 list,
> but I'd like to solicit from this community what it considers to be the
> most annoying and common operational misconceptions future operators
> often come at you with.
> I'd prefer replies off-list and can summarize back to the list if
> there is interest.
> John

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