Does the Spring 5 certification book cover topics NOT in the exam?
- Does it have topics on best practices for Production environments?
- On what cases should you not use Spring Boot, but use Spring Core (and other dependencies) or use a different technology?
You may want to read Ivan Krizsan's Spring 5 tutorial for the exam. You can find it at https://www.ivankrizsan.se/ I recommend this book Getting Started With Spring Framework covers Spring 5 by Sharin and Sharma.
I am sure reading Iuliana' book will be helpful too.
Basically, it is better to find more resources.
For production environment, you may want to consider Spring boot actuator to see the health of the application.
Spring Boot is getting more popular and it has auto configure for Spring Core. But Spring Core is still useful for Spring boot.
Have you tried to work on mock exams from vendors? Those mock exams can help you understand more about the exam.
But you still need to google search for Spring Boot Test and actuator documents.
He was giving me directions and I was powerless to resist. I cannot resist this tiny ad: