hello -i was wondering how the internet sevice provider look like .is there only one router in the isp which connect to the "back-bone" with optic fiber, or there are alot of routers is the isp which connect to the back bone ( with optic fiber) ?ther...

Hellohope someone could explain me something -as i understand the dlci is a uniqe number which identify a uniqe point to everynetwork. ( its symbolize the first point where the network is connected to the f/r cloud , or the uniqe dce of every networ...

helloi was wondering what is the different between synchronous and asynchronouscommunication ?and what is the meaning of that ?is ppp for example is synchronous or asynchrounous ?is f/r for is synchronous or asynchrounous ?could f/r or ppp be both ?...

hello ---------there are two commands that i don't understand their meaning, when i configure the line conrouter(config-line)#stopbits 1 // what does it mean and why i should write itrouter(config-line)#transport input none // why ? what does it mean...

hello -im searching a router emulation of cisco routers.emulation that can give me a way to configure some routerswhich connect to each other throught different technologies ( f/r , isdn and more )is there such kind of emulation ?does cisco recomment...