TEKsystems Javadeveloper interview questions

1. collection store which data type? 2. if 500 requests are coming to a service what will happen? 3. if i give load on start up is 1 to all servlets waht willl happen? 4. there is only one servlet , if i give load on start up 100 what will happen? 5. what are REST services? 6. can you tell me something about soap services? 7. how xml elements are match with the exact bean class variable?