Competition Resources
The Exam Blueprint will tell you how many questions from each instructional area will appear on the exam. The number of questions will change at the District, State (Association) and ICDC competitions. Knowing how the exam is built give you an edge over other students who have never looked at it and studied each instructional area equally.
This document is an analysis of 2100 DECA marketing exam questions. I looked for repeated PI from each instructional area. I used the District Exam Blueprint when evaluating how many PI's I looked for.
Exam Resources
This is a link to a Quizizz question bank. It will give you 25 questions at a time. You can repeat this as many times as you like.
DECA+ has on online practice exam you can take, as well as several downloadable copies.
DECA.org/compete has the exam blueprints, the district instructional area, and an exam in your content area that you can check out.
DECA.org/resources has a bunch of tests that you can download. Change the filters on the left to "Exam" and the correct career cluster for your event i.e. "Marketing" to find several tests.