A Microsoft descreve o seguinte:
Determine if the master browser has the server's name in its list. The master browser is the first server in the chain of communication that must contain the missing server's name
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Além disso:
The Master Browser is responsible for the browse list within its respective subnet and portion of the domain on its subnet. The Domain Master Browser is used to collect information from each of the Master Browsers via the NetServerEnum API call. Once collected the list is merged with the Domain Master Browsers list for its own subnet.