A+,Net+ vs MCSA

Hi Guy,
I have a question, since A+ and Net+ can be a subject of MCSA. If some one pass three subject of Microsoft exam, how can Microsoft know that guy had already pass A+ and Net+? Do they according the name, ssi# or address?
I have a question, since A+ and Net+ can be a subject of MCSA. If some one pass three subject of Microsoft exam, how can Microsoft know that guy had already pass A+ and Net+? Do they according the name, ssi# or address?

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