Core Java Questions: 1. OOPS concepts with examples. 2. How to achieve multiple inheritance in java? 3. Explain servlet Life Cycle? 4. How to troubleshoot a client system which has Fat Tree network? Explain in detail 5. MVC architecture working in java. MySQL Questions: 1. What are dynamic elements in MySQL? 2. What the maximum size a table can be in MySQL? 3. Different types of Joins with examples? 4. Gave an example database and targeted questions were asked to form MySQL queries to retrieve necessary data from the database? 5. Where is the configuration file for MySQL located in Windows system? 6. Clustering techniques in MySQL. 7. ACID properties with examples. My Advice is to study all core java questions and MySQL basics to prepare yourself for this role. Good Luck!