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Greatest challenge in 1Z0-815 and 1Z0-816 exams

 
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Hello, Jeanne Boyarsky and Scott Selikoff,

Congratulations on new your new book, I am looking forward to read it!
In your opinion, what is the greatest challenge (the most complex topic) while taking the 1Z0-815 / 1Z0-816 exams, especially for someone still working on Java 8? To be honest, while looking at the specifications of Project Jigsaw, the module system looks the toughest to me!
Also, for someone that already took 1Z0-808 and 1Z0-809, what do you believe to be the best approach: take both 1Z0-815 and 1Z0-816 exams or pursue for 1Z0-817 only?

Thank you,
Andrei.
 
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If you enjoy studying for the exam and want to learn the most material, then take both exams.  Of course, that will cost double the money, so that’s certainly not for everyone!

The upgrade path will definitely be easier but you’ll miss learning a lot of important topics like security, annotations, concurrency, and JDBC just to name a few.  Granted, some of those are review from 1Z0-809.
 
Scott Selikoff
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And to answer your first question.... yes, modules!  Not because it is really that difficult but because it’s so strange and honestly, not that intuitive.  It’s hard to guess an answer to a module question.. especially if it’s about command line syntax (which is heavily featured on the 815 and 817 exams).  You either know the command line options and how to use them or you don’t!
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