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.
It is measured in two numbers, such as 110/70 (110 over 70). The first or top number (systolic pressure) is the highest pressure in the arteries when the heart pumps blood into them. The second or bottom number (diastolic pressure) is the lowest pressure when the heart rests to refill between beats.