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Could you answer this question for me?

 
 
KFM
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      06-23-2007, 06:13 PM

My girlfriend has an assignment and asked me to look up the answer to
this question, and I really don't know very much about it, or how to
search for it on Google.

If someone could tell me either, it would really help me out. The
question is in three parts.

QUESTION 2 [50 marks]

Assume a restaurant has two ISPs providing Wi-Fi access for its
customers, with each ISP operating its own AP and having its own IP
address block.

a) If each ISP has configured its AP to operate over channel 11, what
will happen to the 802.11 protocol? [15 marks]

b) Discuss what happens when two stations, each associated with a
different ISP, attempt to transmit at the same time. [15 marks]

c) If one AP operates over channel 11 and the other over channel 1,
calculate the transmission rate for the two ISPs for 802.11b protocol.
[20 marks]


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Jeff Liebermann
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      06-23-2007, 07:50 PM
KFM <(E-Mail Removed)> hath wroth:

>My girlfriend has an assignment and asked me to look up the answer to
>this question, and I really don't know very much about it, or how to
>search for it on Google.

(...)

Neither you nor your girlfriend are going to learn much if you ask for
instant answers. I think it's called plagerism, cheating, and
wasteing time. Interestingly, the questions are not particularly easy
and are apparently cleverly worded to discourage Google searches. You
actually have to understand how radio, wi-fi, IP networking, and
802.11 work in order to answer the questions. Also, since this is
apparently a skool problem, you both have resources available that
will be more than happy to help you select appropriate reading
material. It's also considered bad form to have others do your
homework for you:
<http://www.faqs.org/faqs/usenet/primer/part1/>
See section on using usenet for homework and class projects.

Incidentally, you could just test what happens when you actually try
all three conditions. All it would take are two wireless router and
two laptops with wireless. Since you're apparently on RoadRunner
cable, you should have enough bandwidth to simulate two independent
ISP's. Use IPerf for benchmarking.



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Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
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