Lynne Hale's daughter has another homework question!!

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Lynne Hale

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Hi again. At the moment I am looking at case studies based on Universities using networks on different campuses. I'm not sure of the answers to these few questions, so if you could help me I'd be really grateful once again!

- The university decides that security for its research department is vitally important on a particular campus. What type of cabling is it most likely to decide upon for this campus?

- A LAN is set up on one of its campuses using Ethernet. What types of cabling might be used?

- On a number of LANs at some of the university’s ordinary campuses, security is not such an issue and the university authorities decide in favour of the cheapest LAN available. What cabling type is this most likely to be?

- A newly employed technician, on hearing that a campus LAN uses a fibre optic cable to connect two buildings, complains that LANs ought to be restricted to a single building. Is she correct?

THANKS!!
 
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In each building, depending on the distance from the wiring closets, Cat5e would be the cable of choice. If more than 100 meters, then fiber is desireable. Is the tech concerned about haveing 1 lan per building based on the amount of users, or because of the locations? The reason for using fiber is not only because of distance, it is also because it dangerous to use copper medium connecting 2 different building with different electrical grounds. This can be hazardous to equipment and technicians..Thus the use of fiber is always recommended for connecting 2 buildings regardless of the distance.
 

JohnWill

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For security, I suspect fiber would be the desired media, since it's very difficult to tap into without killing the connection entirely.
 

Lynne Hale

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Thanks so much for your help everyone. I only have 2 more questions and then that's it:

What cabling is usually used on an Ethernet?

What is the cheapest cabling to use on a LAN?

Thanks again.
Sandy
 

JohnWill

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CAT5 or CAT5e is what's currently used, and CAT5 would be the cheapest, since the newer CAT5e has higher specification requirements.
 
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if ethernet, rather than fast ethernet, you could be using good old fashioned coaxial with 10base5 co-ax being capable of being used up to 1500ft. It is still favoured by a number of schools, especially those still using Token ring LANs, though at $186 per 1k ft not as cheap as cat 5e at $88 per 1k ft. The other advantage is that CAT 5 would give "room to grow"
 

JohnWill

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I don't know any people that are still using coax, perhaps Europe is behind the times. :D
 
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Possibly, more likely they were ahead of the times then, but now can't afford to upgrade ;)

I know a couple of firms that still use 10Tbase Token rings, but they hardly need much else.
 

Lynne Hale

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Thanks so much!! I don't know what I would have done if you hadn't all helped me. Thank you thank you thank you!!
Sandy
 
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