The AWS Certified DevOps Engineer - Professional exam validates the advanced technical skills and experience in designing applications and distributed systems on the AWS platform. The sample concepts you must understand for this exam include:

1. Design and implementation of dynamically scalable, highly available, fault tolerant and reliable applications in AWS.

2. Select the appropriate AWS services to design and implement an application based on the given requirements.

3. Migration of complex multi-level applications in AWS.

4. He has 6 practice exams (60 questions each) with a time limit of 180 minutes to emulate real exams.

5. The practice exams cover a whole set of AWS concepts and services with scenario-based, multiple-choice and multiple-choice questions

6. The practice exams are updated periodically to be in line with the change in the AWS exam pattern

7. Each question is assigned with the test domain in order to evaluate its strength and weakness

8. Each question has explanations for the correct and incorrect answers, with reference links that point to the relevant AWS documentation.

9. It contains a test report to track your progress and show you in what area of knowledge you need to improve.