Two computers in two different Baton Rouge corporate LANs send an email to a rec

Question

Two computers in two different Baton Rouge corporate LANs send an email to a recipient in Rome. Italy. Computer A sets the time to live bits to 50 hops. Computer B sets the time to live bits to 20 hops. Will both emails make it to their destinations? Justify your answer. Draw the network diagram. What is the upper impedance limit for each of 10 loading coils on a copper transmission line if the required bandwidth is 150 kHz? Assume a safety margin of 5%. What is the purpose of a safety margin in this case?. A telephone network has an SNR of 30 dB and B of 3100 Hz. If a message is transmitted at 1600 baud with 5 bits/symbol and 32 symbols, what is the data rate? Does the telephone network allow this transmission? Justify your answer. For a cellular system with a cell radius of 30 miles. N=21, and k=695: What is the required distance between transmitters in adjacent cells? What is the area of each cell? What is the distance between the centers of cells that use the same frequencies? How many frequencies are in each cell? What is the channel reuse ratio?

Explanation / Answer

2)According to Shannon’s Capacity formula (Stallings, 6th ed., page 96), the maximum channel capacity (in bps) is given by the equation: C = B log 2(1 + SNR)

C=3100 log2(1+30)

=3100*4.95=15345 bits/second

1 baud=4bit/second

1600 baud=6400 bit/second

32 symbol=32*5=160 bits

data rate=6400/160=40 Answer

Yes this transmisson woud be allowed since it is under above mcalculated capacity.

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