You are asked to set up a virtual meeting, using speaker phones to create a conf
ID: 3782976 • Letter: Y
Question
You are asked to set up a virtual meeting, using speaker phones to create a conference call that will allow a group often people at ten different sites to have an important meeting. Which will most closely fit your needs, unicast, multicast, or broadcast? Why? A single telephone conversation has a bandwidth of 3000Hz. If a major telephone trunk can handle a total of 10MHz of frequency, how many telephone conversations can fit on this line? Assume you will allow a total of 1000Hz of "buffer" between conversations to prevent interference. Did you perform this calculation using FDM, STDM, or statistical multiplexing? You are transmitting a 10MB file from one end of the country to the other over a 100Mbps link. Is this transmission dominated by bandwidth concerns, latency concerns, or a combination of both? Assume the transcontinental latency is 0.024 seconds.Explanation / Answer
1)
Broadcast fits our our need.
Because unicast means one-to-one, multicast means one-to-All but receiving is not available.
Broadcast means it will send data to all destinations and at same time it will receive all data.
For conference it is must to send data and receive all. So broadcast is correct choice.
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2)
Telephone handle 10Mhz frequency, and bandwidth takes 3000Hz.
Total telephone conversation can fit in this line = 10 x 10^6/3000 ===> 10 x 10^3/3 ===> 3300 telephone lines.
Will perform calculation using Standard time division multiplexing since it transmits data along with bugger.
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3)
Domination will be by bandwidth since latency is very less time nearly 0.024 seconds.
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