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Old 05-05-2016, 03:55 PM   #1
furface
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Some tricky questions about networking


Hello, I hope these questions aren't too vague and too far off topic. I have always wondered about some technical details on networking bandwidth. I'm mostly interested in how broadcast/multicast technology could possibly solve the issue of live streaming to a massive number of clients.

1. My take is that WIFI bandwidth is finite for all routers in a given geographic area. Is this true? I was in a crowded shopping mall on Market Street in San Francisco the other day, and I couldn't use any WIFI connection. I'm assuming this is because all the WIFI bandwidth was being used, and it wasn't a router problem.

2. With normal commercial fiber optics, are multiple houses/businesses fed from the same fiber? It seems that cable networking providers like Comcast have a natural advantage if they broadcast commonly used TV channels because they send all the data for a neighborhood down the same cable, which is essentially broadcast. Is this the same for fiber?

3. Is routing typically a bottleneck for high cap/high number of client connections?

4. As far as energy usage, does routing or data transmission use up the most energy?

Any comments or links would be greatly appreciated.

Thanks.
 
Old 05-05-2016, 04:38 PM   #2
michaelk
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Quote:
My take is that WIFI bandwidth is finite for all routers in a given geographic area.
Just to make sure... Are you asking about bandwidth using an open WiFi access point or using cell phone data i.e. LTE/3G?
 
Old 05-05-2016, 05:06 PM   #3
furface
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Originally Posted by michaelk View Post
Just to make sure... Are you asking about bandwidth using an open WiFi access point or using cell phone data i.e. LTE/3G?
I was talking about bandwidth using an open WiFi access point. Thanks.
 
Old 05-05-2016, 05:35 PM   #4
michaelk
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I would guess an access point problem but there are many other factors. No, the router's bandwidth is not finite for a given geographic area.

Limitations are the type of broadband service and the ISP physical hardware in addition to them offering different plans based upon bandwidth.

Next would be the mall's hardware i.e. MODEM and router/access point. Even though you might have a 50 MB/S service if the MODEM only supports 25 then that is all you get. Routers and access points have a limited bandwidth including the type of WiFi i.e ABCGN etc. They have a max bandwidth limitation per their technology / specification.

And then the wireless access point can only support a limited number of connections as well as your physical location i.e distance and objects between you and access point. Simplistic but you are basically dividing its wireless speed by the number of connections. The greater the distance and more junk in between you and the access point will also lower the speed.
 
  


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