with csma/cd, is it more correct to say that signals collide, packets\ncollide, or frames collide? are any of those wrong?\n\nThe detection must occur at the physical layer, so it's signals there.\nBut once there's a collission, i'd have thought it's frames. and all\nframes contain packets.\n\ni know that cisco refers to signals colliding. But most other sources\nrefer to packets colliding, and many - but fewer - refer to frames\ncolliding. IF it is packets colliding then that's more specific than\nsignals. But is it as correct?