Microsoft Software Development Engineer (SDE) II interview questions

Round - 2 Design Round --------- 1. Visitor Pattern 2. Singleton 3. Static 4. Singleton vs Static 5. Any other approach for logging other than singleton and static 6. How singleton is tightly coupled 7. Inheritance vs Association class - which one to choose - IS-A relationship choose inheritance, HAS-A choose association 8. Events 9. Logger design 10. Db design - he gave me different scenarios and asked me design for the same 11. No sql based db design 12. Challenges faced while designing 13. UML association 14. Rest my current project related questions

Round - 3 Managerial Round --------- 1. Strengths 2. Weakness 3. Challenges faced 4. Willing to relocate 5. What kind of work are you looking for 6. Why do you want to switch? If you will get similar work then what will you do 7. Swap linked list in pairs 9. MOQ, NUnit 10. Challenges faced, Complexity handled 11. Rest my current project related questions