Subnetting study question

xkaijinx

For ICND1 & ICND2 I notice from CBT Nugget Videos they go through 3 types of subnetting scenarios.
1) Figure it out based on the # of networks needed
2) Figure it out based on the # of hosts given
3) Figure it out based on reverse engineering.

Now he goes on to say that on the Cisco exams the questions are all reverse engineering type. I also went on subnettingquestions.com - Free Subnetting Questions and Answers Randomly Generated Online and all of their questions fall into the reverse engineering category.

Is it ok to limit my studying to the mastery of reverse engineering type questions for subnetting for the ICND1 and ICND2 exams?

Thanks for help,

phatrik

Look at it this way: do you want to take a chance a limit your studies even though you might encounter scenario #1 and 2 on the exam? Might as well learn everything you can just in case. No one is allowed to tell you what's the exam so I doubt you'll get a more specific answer. Plus, once you understand the math behind subnetting (bits represent networks, subnets and hosts. you use 2^x to calculate how many of each) it'll be just as easy to figure out either of the 3 scenarios.