I didn't make too many LJ notes this pass because I knew a lot of stuff already. I also didn't have as much time to study as I wanted. When I pass this, I will be a genuine Certified Level 1 Linux Professional by the Linux Professional Institute. Level 1 means I get Magic Missile and Tenser's Floating Disk. [snort]
I am nervous as hell... again. One last bit of "type to remember." I got too used to subnet calculators. I wrote this page years ago, recently updated it, but I forgot one vital piece of information: you are given an IP and subnet mask: how do you find out the network and broadcast address?
There's nothing special about this, it's done all the time. Let's take this example.
That's a class C address, as you would know because it's over 191 for the first octet. You know /29 is really:
So we know the network is in increments of 8.
We know its #2 in this list because it's less than 16. So in this case we know the network is 192.168.3.8, the broadcast address is 192.168.3.15 (one less than 16).