PracNet Subnet Guide - 2nd and 1st Octets

The /1 - /16 Range, AKA: 2nd and 1st octet Range

Draw a fifth and sixth row for the cheat sheet than ranges from /16 to /9 on the fourth, and /8 to /1 on the sixth, written from RIGHT to LEFT
When solving questions, be mindful of what octet you’re working on when incrementing. If it’s in the 2nd octet range then you’ll be working with the 2nd octet of the IP address, and likewise for the 1st octet
- Also, do watch out for changes on the other octets, the ones that are to the right of the octet you’re currently working on.

This image contains a special problem.
- When solving, you’ll find that there’s no next network section, as we’re currently on the last possible subnet of the /2 prefix
- The answer is to the next network will be: n/a


Next network is N/A