Guys, I've issued my App Builder certification last week! Thank you so much #Salesforce for giving us the Certification Days!

A tip for you guys: Nothing about Lightning Components has been applied to me during the exam.

That trailmix has helped me as well to pass in the exam:

https://trailhead.salesforce.com/users/strailhead/trailmixes/prepare-for-your-salesforce-platform-app-builder-credential