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Home > Archive > alt.certification.network-plus > May 2003 > Mac an LLC sublayers
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Mac an LLC sublayers
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| Are the MAC and LLC sublayers necessary for test info, or do you just need
to know the data-link sublayers? ie llc,mac, bridge, and switch. Thanks for
any info. Also, I've seen a few posts where people have said that network+
is easier than A+, any opinions on that? I am currently A+ certified,
working on Network+.
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| Steve Smith 2003-03-27, 6:24 pm |
| I just took the exam last week and I was surprised to see only one or maybe
two questions on the OSI model. Maybe it was just my exam but that's all
there was. The one OSI question I remember is "What layer is UDP at on the
OSI model?" It's on the transport layer(4) with TCP. I remember this
question because I missed it. I knew TCP was on Transport layer but I also
know TCP is a connection oriented protocol while UDP is connectionless and
this threw me because I didn't think a connectionless protocol would be on
layer 4. But, I know now. However, I still wonder if the OSI model is really
useful for anything other than passing Net+.
Steve Smith
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| Thanks for the info Steve. Yeah, I wonder about that whole OSI usefulnees
thing as well, but I guess it's necessary for the test.
"Steve Smith" <s.w.smithREMOVECAPS@cox.net> wrote in message
news:XQLga.17428$ns6.832116@news2.east.cox.net...
> I just took the exam last week and I was surprised to see only one or
maybe
> two questions on the OSI model. Maybe it was just my exam but that's all
> there was. The one OSI question I remember is "What layer is UDP at on the
> OSI model?" It's on the transport layer(4) with TCP. I remember this
> question because I missed it. I knew TCP was on Transport layer but I also
> know TCP is a connection oriented protocol while UDP is connectionless
and
> this threw me because I didn't think a connectionless protocol would be on
> layer 4. But, I know now. However, I still wonder if the OSI model is
really
> useful for anything other than passing Net+.
>
> Steve Smith
>
>
>
>
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| Slammer 2003-03-27, 8:24 pm |
| Better learn the OSI now.....There is no getting around it later as you
progress to more advanced Certs.....Your going to see it over and over
again.
--
Slammer
MCSA, CNA5, iNet+, Server+, Net+, A+,
CIW-Assoc.
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| Steve Smith 2003-03-27, 10:24 pm |
| I've noticed that. I had to read at least four or five different
explanations of the layers before I could grasp the differences between some
of them. I used three different books and found some great info on the web.
"Slammer" wrote:
> Better learn the OSI now.....There is no getting around it later as you
> progress to more advanced Certs.....Your going to see it over and over
> again.
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| Charles M. Kozierok 2003-03-28, 6:24 am |
| In article <6dOga.14773$5F.727679@twister.austin.rr.com>,
Slammer <mschal@houston.rr.com> wrote:
} Better learn the OSI now.....There is no getting around it later as you
} progress to more advanced Certs.....Your going to see it over and over
} again.
You're also going to see it in the real world too. Pick up some
standards sometime. Look at the Ethernet standard and see how the
technology is designed. Try the main TCP/IP standards.
If you want to really understand networking, you *do* need to get the
concepts of layering and interaction between protocols. Try
understanding IPSec for example without understanding layers. Try to
explain how VLANs work. Try to explain the difference between a bridge,
a router and a brouter. There are hundreds of more examples.
The OSI model is *not* just for the test. No, you don't need to know it
just to set up a small LAN or connect to the Internet. But you do need
to know it if you want to really know how this stuff works.
peace,
-*-
charles
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| Again, thankyou all for your help and insight.
Steve
"s" <me> wrote in message news:v84mvekevtb33f@corp.supernews.com...
> Are the MAC and LLC sublayers necessary for test info, or do you just need
> to know the data-link sublayers? ie llc,mac, bridge, and switch. Thanks
for
> any info. Also, I've seen a few posts where people have said that network+
> is easier than A+, any opinions on that? I am currently A+ certified,
> working on Network+.
>
>
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| Geoff Bell 2003-05-08, 7:24 pm |
| as you continue to read and study, the osi model *will* start to click. i
understood it best by reading about the various hardware and tcp/ip
protocols, rather than the chapter dealing directly with the osi model.
"s" <me> wrote in message news:v8a1csoum38p3e@corp.supernews.com...
> Again, thankyou all for your help and insight.
> Steve
> "s" <me> wrote in message news:v84mvekevtb33f@corp.supernews.com...
> > Are the MAC and LLC sublayers necessary for test info, or do you just
need
> > to know the data-link sublayers? ie llc,mac, bridge, and switch. Thanks
> for
> > any info. Also, I've seen a few posts where people have said that
network+
> > is easier than A+, any opinions on that? I am currently A+ certified,
> > working on Network+.
> >
> >
>
>
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