[fzakharov]

Выложил вариант b:
(b) For what filesize n B is the total latency incurred before the entire file arrives at the destination less for circuits than for packets?

[fzakharov]

Выложил вариант с (http://net-of-mine.blogspot.ru/2014/...ach-5e_30.html)
(c) How sensitive are these results to the number of switches along the path? To the bandwidth of the links? To the ratio of packet size to packet header size?

[fzakharov]

Следующая задачка тут: http://forum.oszone.net/thread-282952.html

[WSonic]

fzakharov, Вы с кем разговариваете?

[fzakharov]

Просто делюсь наработками, ищу единомышленников, критиков.

Задачки из: Computer Networks: A Systems Approach 5e
Exercises (1.26).

For the following, assume that no data compression is done, although in practice this would almost never be the case. For (a) to (c), calculate the bandwidth necessary for transmitting in real time:
(a) Video at a resolution of 640×480, 3 bytes/pixel, 30 frames/second.
(b) Video at a resolution of 160×120, 1 byte/pixel, 5 frames/second.
(c) CD-ROM music, assuming one CD holds 75 minutes’ worth and takes 650 MB.
(d) Assume a fax transmits an 8×10-inch black-and-white image at a resolution of 72 pixels per inch. How long would this take over a 14.4-kbps modem?

Решение тут: http://net-of-mine.blogspot.ru/2014/...h-5e_7170.html
Решена в MathCAD.

[fzakharov]

Задачки из: Computer Networks: A Systems Approach 5e
Exercises (1.27):

For the following, as in the previous problem, assume that no data compression is done. Calculate the bandwidth necessary for transmitting in real time:
(a) High-definition video at a resolution of 1920×1080, 24 bits/pixel, 30 frames/second.
(b) POTS (plain old telephone service) voice audio of 8-bit samples at 8 KHz.
(c) GSM mobile voice audio of 260-bit samples at 50 Hz.
(d) HDCD high-definition audio of 24-bit samples at 88.2 kHz.

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