MTA certification addresses a wide spectrum of fundamental technical concepts, assesses and validates your core technical knowledge, and enhances your technical credibility. Note MTA exams do not qualify for MCP certification, nor are they a prerequisite for MCSA or MCSD certification.
The bottom number is the more important of the two. The bottom number of your BP (104) is a bit high. That's the pressure in your blood vessels after your heart has contracted and is now at momentary rest. Average is about 80. Your upper number (128) corresponds to the pressure in your vessels when your heart contracts.
Two numbers are recorded when measuring blood pressure. The top number, or systolic blood pressure, refers to the pressure inside the artery when the heart contracts and pumps blood through the body. The bottom number, or diastolic pressure, refers to the pressure inside the artery when the heart is at rest and is filling with blood.