It is a good idea to have a regular exams but not to only one profession. It should be applied to each and every field. Even, in USA they have a system like tenure track assistant professor. A similar system would be helpful in India also. In India once you will get a job yo are all set. If you can do some politics in the office you will be promoted no matter what your performance is.. The worst scenario one will see in case of the candidates selected through quota. I think every body will have several experience in dealing such things. It is really tough to deal with a SC/ST/OBC officer now a days especially after the use of computer. Even a bank manager doesn't know how to operate a computer. There should be some exam for these guys also for the promotion. One is getting a job in quota still it is OK but gettig promotion is really bad. SO long our society will not change performance based jobs and promotions in all profession the quality of service we are getting from all sectors will be in such low standard.