Thank you and Don for the A+ video's they helped me alot to get my A+ cert! The next step now is Network+. I folowed the first few video's and i was wondering if you could verify my current grasp of the way a pakets are send across difrent servers for example a SMTP mail server.
Does this mean that my computer goes about make a pakage all they way from layer 7 to layer 1 and that the first mailserver SMTP A translates that all the way back again to layer 7? So it can repack back it to Layer 1 and send it to SMTP server B? Or does it sometimes happen that it is inough to stop at for example Layer 3 to redirect it to the server B?