Good Bye Sanity Hello Subnet
This is a pretty persnickety subject. I have seen netwoking professionals with years of experience nearly meltdown while try to do subnets manually. In the real world we use a calculator, or a website to calculate this, but for the test you will need to do these by hand. We will work on this a little bit all through the class, you will be able to do binary arithmetic and subnet by hand by the time we are done.
