How to prepare for Microsoft IC4 (Senior) OA - USA

Hi everyone, I just received an invite for the Microsoft Online Assessment (OA) for an IC4 (Senior) position in the USA. I'm starting my final prep and would love some guidance on the best way to appr

Hi everyone, I just received an invite for the Microsoft Online Assessment (OA) for an IC4 (Senior) position in the USA. I'm starting my final prep and would love some guidance on the best way to approach this. A few specific questions: • LeetCode Strategy: Is it better to focus on the top Microsoft questions from the last 30 days, or should I stick to the all-time high-frequency problems? • Difficulty Level: At the IC4 level, should I expect mostly Mediums, or are Harsher/more complex problems common? • Topic Focus: Which areas are currently trending in the US rotation? (e.g., Graphs, Strings, Greedy, or DP?) • Senior Expectations: Aside from passing test cases, does Microsoft look for specific "Senior" signals in the OA, like clean code or modularity? If you've taken the assessment recently, I’d love to hear what worked for you or any "must-do" resources you recommend. Thanks in advance for the help!