If you are taking two different exams, you can schedule them however you'd like (back to back, on different days, etc.). The only time specific rules apply when you are retaking an exam that you previously did not pass. These rules are listed in the
section titled "Exam Retake Policy" here:
https://www.microsoft.com/en-us/learning/certification-exam-policies.aspx#security-policies
Thanks,
Sam Lester (MSFT)
http://blogs.msdn.com/samlester
Twitter - @SQLSamLester
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