>In ethernet, are the bits, 0s and 1s,
>0 volts and +5 volts?
>
>I saw that on my CCNA test but did
>not see it in the books I used.
>
>Is that true?
Without SIGNIFICANT clarification, as to which specifications the
question refers, it's insanely false.
To begin with, a bit being sent to the medium doesn't exactly
correspond to medium signals. The actual medium (at least the
electrical ones with which I am familiar) use Manchester encoding.
Second, if we include optical ethernet, what do voltages have to do with it?
If the question refers to AUI, RJ45/10BaseT, etc., it needs to be
clear that's what it means.
It feels like yet another test writer taking the easy way out,
testing for a factoid that he or she doesn't really understand.
Since I am getting crotchety about this, I conclude I need lunch.
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