3) In a DWDM system wavelengths can be assigned on demand. The system sends files with an average length of 2.2TB, file lengths are exponentially distributed. Each wavelength transmits at 100GB/s. A group of users generates 200 wavelength requests/hr. Time between requests are exponentially distributed.
3) In a DWDM system wavelengths can be assigned on demand. The system sends files with an average length of 2.2TB, file lengths are exponentially distributed. Each wavelength transmits at 100GB/s. A group of users generates 200 wavelength requests/hr. Time between requests are exponentially distributed.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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![3) In a DWDM system wavelengths can be assigned on demand. The system sends files
with an average length of 2.2TB, file lengths are exponentially distributed. Each
wavelength transmits at 100GB/s. A group of users generates 200 wavelength requests/hr.
Time between requests are exponentially distributed.
a) The group is assigned a set of N wavelengths. How many wavelengths (N) are needed
to keep the blocking probability < 2%?
b) Plot Load = 1*(average holding time) as a function of the number of wavelengths
(N=4...21) for a blocking probability 2%. Hint: Use the Erlang B table.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F16968dd0-f2a3-43df-bf8e-fc102aba62ad%2Fd3cc2887-a99c-47c1-8578-60cd5bc7c486%2Finc68oi_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3) In a DWDM system wavelengths can be assigned on demand. The system sends files
with an average length of 2.2TB, file lengths are exponentially distributed. Each
wavelength transmits at 100GB/s. A group of users generates 200 wavelength requests/hr.
Time between requests are exponentially distributed.
a) The group is assigned a set of N wavelengths. How many wavelengths (N) are needed
to keep the blocking probability < 2%?
b) Plot Load = 1*(average holding time) as a function of the number of wavelengths
(N=4...21) for a blocking probability 2%. Hint: Use the Erlang B table.
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