# Help! Easy looking CS (comp sci) question

#### CarpeDeo

##### Golden Member
It's a question concerning benchmarking, but I don't understand the last part about sampling. How big is a sample? Is each sample one byte? Wouldn't seem to make sense: Here it is:

&quot;A secret government agency simultaneously monitors 100 cellular phone conversations and multiplexes the data onto a network with a bandwidth of 1 MB/sec and an overhead latency of 350 us per 1-KB message. Calculate the transmission time per message and determine whether there is sufficient bandwidth to support this application. Assume that the phone conversation data consists of 2 bytes sampled at a rate of 4 Khz.&quot;

huh?

#### samarth

##### Senior member
There isnt sufficient bandwidth if you work out the numbers. Too lasy to type it up.

#### CarpeDeo

##### Golden Member
I woulda thought that there is enough bandwidth? 2 bytes @ 4000 Khz = 8 kb's? 8 kb's * 100 calls = 800 kb's. 800 kb's < 1 Mb . . . so there is enought bandwidth . . . ?

#### Turkey

##### Senior member
Each sample is 2 bytes.

The data rate from a phone:
2 bytes * 4 KHz = 8 KBytes/sec