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What is the maximum burst length on an 155.52 Mbps ATM ABR connection whose PCR value 200,000 and whose L value is 25 msec ? 

  • A.9 cells
  • B.12 cells
  • C.15 cells
  • D.18 cells

Answer: B

Correct answer: 12 cells

The burst is limited by the interval L and the peak cell rate, and the excess over what the line itself would deliver in that time works out at 12 cells for the figures given.

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