Upstream

1.The direction of 

data

 moving from 

a

 client to 

a

 Web 

server

. 2.

A

 reference to actual 

data

 that is moving from individual 

computer

 to 

server

. 

It

 is important to note that 

upstream

 differs from 

downstream

 due to their different transfer rates; for example, 

cable

 modems transfer 

data

 up to 30 Mbps 

downstream

, but opnly 128 

Kbps

 to 2 

Mbps

 upstream.