SAP ABAP Real Time Questions

Which client number you use for the current project?
You are running a report. It is taking long time for execution. What steps will you do to reduce the execution time?
After running a BDC program in background, next day morning when you see the results, few records are not updated(error records). What will you do then?
You are given functional specs for a BDC program and you need to decide whether to write a method call transaction or a session. How u will decide?
What is the difference between report and script?
what are the differences between scripts & smart forms?
what are enhancements?
what are user-exits?
what is badi?
what is the difference between user-exit & BADIs?
what is the difference between user-exit & customer-exit?
how do you get functional specs when you are assigned some object? (specs through email..??)
How do you write technical specs?
Howdo you write UTP?(unit test plan)