DP-420 practice question bank is great

I was weak in Maintain an Azure Cosmos DB Solution topic. This is one of the topics in the dp-420 syllabus. Generally what people do is that they study and mug up the topic that is tough. However, i could not do that. So what i did was to clear the topics and the difficulties involved by the means of answering dp-420 practice questions online on edusum.cum. This was a great help by the way.