[Year 12 SofDev] Re: Ring Networks sofdev Digest, Vol 60, Issue 14

Thu Mar 18 08:59:51 EST 2010

Hi Anthony and Maggie

I do not believe the cost of a network has much to do with the cost of a server. Ring networks (which are hardly used anymore in office environments) cost much less because much less cable is required. You must consider that that these networks were popular when they were using thick and expensive coaxial cable. A star network requires a separate run of cable all the way from the hub to each computer. A ring requires only perhaps 2m between neighbouring computers. Bandwidth in a ring is limited because, like a bus, it is difficult to have more than one computer transmitting at a time. Now that we have cheap twisted pair cables like Cat6, it makes little sense to have a ring network. In fact, why cable to the individual computer terminal at all? - Wireless is pretty good these days with high throughput 802.11N coming onto the scene.

Lindsay Fowler
LF at cgs.vic.edu.au
Information Technology and Mathematics
Camberwell Grammar School
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Today's Topics:

   1. Re: Ring Networks (Margaret Iaquinto)
   2. Re: Ring Networks (Mark KELLY)

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Message: 1
Date: Thu, 18 Mar 2010 06:41:53 +1100
From: "Margaret Iaquinto" <Margaret.Iaquinto at stleonards.vic.edu.au>
Subject: Re: [Year 12 SofDev] Ring Networks
To: <sofdev at edulists.com.au>
Message-ID: <4BA1CB31020000E900011C48 at mail.stleonards.vic.edu.au>
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Anthony

It is always good to talk about the wide variety of topologies out
there. Sorry, I can be of no help wrt the ring topology. Just in case --
the Study Design requires students to understand bus, star and hybrid
topologies. Ring topologies are not examinable. Regardless, your
question is interesting. I hope someone replies to it with a technical
answer.

Textbooks are a great help and I, too, use the Fitzpatrick one as well
as the Janson one. In the end, no matter what sample Outcomes we receive
from our friends on the Lists or what is in the textbook, ultimately we
have to follow the Study Design. 

Maggie

Margaret Iaquinto
Information Technology

St Leonard's College
Brighton Campus
t (+61 3) 9909 9300

www.stleonards.vic.edu.au

>>> "Anthony Sullivan"  03/17/10 10:30 PM >>>
Why are ring networks generallymore expensive to install?

We have been having this discussion in class recently. The quote comes
straightout of the Fitzpatrick text (page 35). Many of my students were
taught in Unit1 & 2 that a ring network is cheaper to install than a bus
or star due tothe fact that a server is not required therefore set up
costs are lower.

Can someone shed some light asto why they may be *more expensive to
install*?

Thanks

Anthony Sullivan 
Head of Information Technology

Telephone  03 9788 7796
Fax           039787 7646
Email         asullivan at tps.vic.edu.au
Address     Wooralla Drive, Mt. ElizaVic 3930

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Message: 2
Date: Thu, 18 Mar 2010 07:50:27 +1100
From: Mark KELLY <kel at mckinnonsc.vic.edu.au>
Subject: Re: [Year 12 SofDev] Ring Networks
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	<sofdev at edulists.com.au>
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