Great teacher. I've studied hard with him, but realized that what I've studied was useful information.
Great teacher. If you pay attention and take notes his classes are very informative. Makes you earn it a little. Always available, always helpful.
Had him for the continued education Cisco I & II. Very good teacher and very knowledgeable, but some work needs to be done outside his class to pass everything with a good grade. There is just too much content for the 12 hour/week program.
I had Oswaldo for Linux and Cisco, great teacher!