Задачка 1.24 из книги "Computer Networks: A Systems Approach Fifth Edition"
 

Consider a network with a ring topology, link bandwidths of 100 Mbps, and propagation speed 2×108 m/s. What would the circumference of the loop be to exactly contain one 1500-byte packet, assuming nodes do not introduce delay? What would the circumference be if there was a node every 100 m, and each node introduced 10 bits of delay?

Решение тут: http://net-of-mine.blogspot.ru/2014/...ach-5e_31.html
Решена в MathCAD.