Hi, I can see you are confused by the mix of singular and plural but it is correct. 1) You can assign a value based on a number of measures, which include hop count and media bandwidth, but could also be from a number of other options of measurement. 2) This is suggesting that one measure will be used, again giving hop count and media bandwidth as example, but it doesn't say how many possible options of measurement there are, it could be just one other or many.
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