I can help you with your ipv4 network addressing problems. Subnetting etc.

I was a student of Mark's while enrolled in the Computer Programmer / Analyst program at Sault College. Mark made attending his classes something I looked forward to. He has a passion for programming and computer networking that contagiously transfers to his students and not only keeps them engaged, but inspires them to develop their own love of technology and problem solving. He brought an infectious positive attitude to the study of programming and computer networking. I was also fortunate enough to hear stories from my father, a fellow teacher and friend at the college, about Mark's warmth and professionalism - amongst other things such as his golf game ;).