From: Scott M Vermillion (scott_ccie_list@it-ag.com)
Date: Thu Jan 22 2009 - 00:56:39 ARST
Hey Jason,
Your examples are right on. Another I recall from my studies that really
crystallized in my mind is interface bytes sent and/or received. That's a
delta thing. Never going to have either of those values decrease over a
fixed given period of time (e.g. since the clearing of counters); it is what
it is and the value can only remain static or increase - you can't ever have
-100 bytes sent or received since the last clearing of counters. Said
simply, delta is the variation of some value from one point in time to
another. If you can remember only that, then you can quickly reason out
that "absolute" must be the opposite (something that can conceivably climb
to a certain value and then recede from it within a fixed given period of
time, such as CPU utilization).
But I think part of your point was that task language can be as much of a
challenge as memorizing the difference between the two, and I certainly
would agree with you on that count! Read carefully and pester proctors is
all I can say as far as all that sort of thing is concerned...
Cheers,
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Jason Madsen
Sent: Wednesday, January 21, 2009 5:53 PM
To: Yandy Ramirez
Cc: Cisco certification
Subject: Re: RMON Delta vs Absolute
I believe one way is whether or not the requirement is a relative increase /
decrease in value from where it's at now or during a period of time vs. a
fixed (absolute) high or low mark. For example with absolute a requirement
could be "...when value X exceeds 1500 or drops below 100". With Delta a
requirement could be "...when a value rises / increases by 1500 or drops
100". I know...there can be a thin line when trying to interpret which
feature to use. Hopefully others will have better examples.
Jason
On Wed, Jan 21, 2009 at 5:46 PM, Yandy Ramirez <yandyr@gmail.com> wrote:
> One of the things hunting me in my studies is RMON. When do we choose
Delta
> vs Absolute? What are indications or specific differences that would lead
> to
> one over another? Thanks for anyone and their response
>
>
> ------
> yandy
>
>
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