Practice Subnetting and Other Math-Related Skills
Like it or not, some of the questions on the Cisco ICND1, ICND2, and CCNA exams require you to do some math. To pass, you have to be good at the math. You also need to know when to use each process.
Interestingly, both the ICND1 and ICND2 exams require this math, but Cisco put the core learning for these math skills in the ICND1 exam topics. As a result, all these math skills are considered prerequisites for the ICND2 exam, but you still have to be good at the math. In particular, ICND2 has many troubleshooting topics, and all these require that you be pretty comfortable with all the subnetting math.
No matter how you learned subnetting before picking up this book, you should review the concepts ...
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