SAP Basis Interview Questions

SAP Basis Interview Questions:

1. What are the steps to start and stop SAP system? 
2. How do you troubleshoot when your SAP system goes down?
3. What are the Database Start-up AND Shutdown Steps?
4. What is System Refresh? when and why it is done? 
5. What is the difference between SAP_ALL & SAP_NEW?
6. How to Lock or Unlock a Client in SAP?
7. How do you update the Kernel? 
8. How to do the TMS Configuration? 
9. How to transport a request from OS level?
10. What is the command to delete the SAP* user from the database? 
11. How do you monitor your SAP systems?
12. What is your back up strategy?
13. What is the use of BRTOOLS? 
14. How do you post a message to SAP? 
15. Which method of role assignment i.e. SU01 or PFCG is preferable? and why?
16. Incase, users are unable to login in your SAP system. How will you analyze the problem? 
17. What is the use of Service and Reference users?
18. What is Client Refresh and why you do that? 
19. What is Client Copy? 
20. Incase, during the client copy, you need the user SAP* and it does not exist. What will you do? 

(Please use comment section below for any query or suggestion.)