You can prepare for Databricks Spark Certification by relying on good industry-grade material to help you clear this certification exam. Initially, you must understand the intention of this certification exam. Databricks Certified Spark Developer Certification exam assesses a candidate's fundamental understanding of the Spark architecture and how these professionals can apply DataFrame API to perform Data Manipulation tasks.
Once you understand this, you gain clarity and confidence to clear the exam, provided your basics and preparation are solid. To take your knowledge to the next level and help you clear one of the toughest certification exams, you should check this Databricks Spark Certification Training. And if you are a novice to Spark, make sure to watch this YouTube video on Spark Tutorial for Beginners.