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The book covers current (2018) exam topic according to AWS exam blueprint, provides a few inside information on how AWS works, although not needed for exam, tests you at the end of each chapter and presents exercises so you can practice around. Having hands on in AWS is the most effective way of learning and fixing concepts for the exam and when working with it. Book guides you in most network technologies for exam and use cases, points to references for more detailed documentation when needed. However it does not provide step by step instructions, it's up to reader to find out more about it as it happens in real life, which I find good, as it e stimulates investigation.
One topic I missed is BGP entirely in details. Not that you need in all situations or even in the exam (as I haven't been tested yet) but I assumed some knowledge such as hierarchy of routing decision would be mentioned. This should be fine if it out of exam scope, and it does not harm going a step forward if you can reading more about it as well.
I really liked this book. I used to prepare for the Solutions Architect Associate certification. It has some parts you can skip for that certification (but you probably need for the Network specialty). But in general it gives you a much clearer picture of how networking works in AWS. You start understanding VPC, subnets, endpoints, NACL, security groups... Not just memorise. Understand However, as with other similar books, it needs some editing. Chapter 4 has 10 questions and only 8 answers!??
Comprehensive, but the book can use some editing. Some of the test question answers are missing or mislabeled. Also, some of the info needs updating. For example, there is one chapter that states that inter region vpc peering is not allowed, while current documentation and even other chapters in this book state that it is. Still, it’s a useful reference
Way more useful than any other method I used for preparing for this exam (ACG, LA, Re:Invent vids). Extremely comprehensive for exam prep and just general AWS networking knowledge.
A little outdated already - and some of the exercises are hard to follow. But the info is presented in manageable chapters with quizzes and detailed answers.