QTP Questions

1. What is reusable action in qtp?
2. What is objective of actions in qtp?
3. Why do need synchronization in qtp?
4. How many modes of recording are there?
5. What is virtual object and when will we use?
6. What are the difference between per text mode and shared mode in qtp?
7. Why do u use object spy in qtp?
8. What is the difference between properties and methods in qtp?
9. What is virtual object and at what we will use virtual object in qtp?
10. What is regualr expression and when we will use regularexpression in qtp?
11. How to add objects to the Object Repository?
12. When we do update mode in qtp?
13. What is the difference between constant and parameter in qtp?
14. What are GET TO , SET TO and GET RO properties in QTP?
15. What is frame work in qtp?
16. Where do check points store in qtp?
17. What are the objectives of Lowlevel recording? What is Elapsed Time? Is Quick Test supports Java Script? What is extention for test script in Quick Test?
18. Why do u save .vbs in library files in qtp?