One of my favorite pastimes is to argue with the various authors of the
Boson tests about things in the material that is ambiguous or confusing.
Those poor guys who wrote the CID practice tests. They're gonna just start
deleting my mail without reading it :->
In the case you mention, this is not untypical of the Boson tests. To be
fair, it is not untypical of some of the questions on Cisco testes either
:->
You can always take advantage of the option to e-mail the author. I have
found the writers to be quite willing to clarify things. This does not mean
their answer is "right", but at least you'll get a better feel for the
reasoning. Besides. In my experience, the Boson authors are pro's, and like
to help folks out.
Now that I actually have a copy of course material to refer to ( notice how
in the Boson correction, much of the answer justification is based on
references to course material ) and can look things up, I see a lot of
things that are interesting. One of which is that sometimes the course
material is a bit dated. Another of which is that sometimes Cisco itself
isn't consistent from one exam to the next in terms of what the right answer
may be. Another of which is that sometimes even the authors of the quizzes
and the supplementary study guides may find themselves a bit amused, not to
mention confused, by some of the arbitrariness of some of Cisco's
promulgations. Both the books I am reading for CID/CCDP for example, have
comments regarding real world vs. test world.
I would say that the Boson tests in general, are much like Cisco tests.
Count on missing 2-3 questions just because they are poorly worded, or
confusing, or flat out wrong. The rest - just get yourself into the Cisco
frame of mind.
Best wishes,
Chuck
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Brad
Stephen
Sent: Sunday, July 02, 2000 7:34 AM
To: [EMAIL PROTECTED]
Subject: BCMSN MLS
Boson has me confused. Regarding Multilayer Switching, how would one
define a flow?
Cisco Press and
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_4_5/config/m
ls.htm#42593
make a flow seem like a stream of packets. However, to have
distinction between different types of conversations, ip and port are
assessed.... "A flow is a unidirectional sequence of packets between a
particular source and destination that share the same protocol and
transport-layer information."
Boson asks, "A flow is a stream of segments between any two ip
address/port number pairs" or "A flow is a stream of packets between
any two IP addresses". The first is asserted as correct.
Confusing, even after looking at it so long. Is Cisco using the term
packet out of context or is Boson just trying to enforce the
granularity of the question? It seems to me that this is a simple
concept and should be reworded something like "http and ftp would be
treated as TWO seperate flows between an identical pair of hosts."
However, is this still a stream of SEGMENTS or PACKETS?
Brad Stephen
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