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very difficult CCDA ??? question (pps calculation) [1:3426] posted 04/21/2001
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How do you calculate the pps for e.g. 10Mbps Ethernet 64 bytes packet?
It thought it would be

 64 bytes min frame + 12 bytes IFG + 7 bytes preamble 
 + 1 bytes SoF = 84 bytes

 10 Mbps = (*1024 = 10240 Kbps, /8 = 1280 KBps =) 1310720 Bps
 pps = 1310720 / 84 = 15603

which is wrong since it is 14880.

Reverse engineering this yields:
 
 10 Mbps = (*1000 = 10000 Kbps, /8 = 1250 KBps =) 1250000 Bps
 pps = 1250000 / 84 = 14880

However when B=8b and 1 KB = 1024 B, 1 MB = 1014 KB,
how can 1 Kb be 1000 b and 1 Mb be 1000 Kb, 
What am I missing?


Tnx, 
 Joep




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