I have recently been offered a chance to take a free MCSE exams of my choice.I am wondering however,which of the exams would be lucrative in terms of getting a job soonest upon completion of course/program.

I am considering taking the Web application exams however. Pls guys, any information would be highly appreciated. Pls note i am a novice when it comes to IT exams, I am only taking advantage of an opportunity to write any of the exams for free.