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Originally Posted by Dr.Scoo

these stuff are useless. not applicable in real life. and no one here is gonna develop a switch or blablabla. so useless they are.

"Not applicable in real life"!!! => Huh?!
Without these my friend, we cannot even see you posting here on vcoderz!
Think before you throw words!
But anyways... It might be understandable from a mechanical engineering student...

@roudy
It is good that you corrected things a little
About the course, I'm not enjoying it because I know the information from before... (It is like when they teach you that 1+1=2) So I won't be in any advanced stage after I finish it...
By the way, the next networking courses you're going to take at the university won't be much different... They will talk about these layers in depth with some routing algorithms...

Again and again, these are not just important, but are the basis of networking nowadays... I think it's useless to put another post concerning this idea... It's obvious and there is nothing to debate...