70-284 or 285?

jackarmy83jackarmy83 Member Posts: 9 ■□□□□□□□□□
Hi all,

I've passed my 70-270 exam and I'm thinking about going for either 284 or 285 because we will be evaluating our usage of our current mail package and might move to exchange. I have heard that it is best to get the 290 and 291 exams done at the very least before tackling any exchange exam. Is this true?

Can anyone post any helpful advice? Thanks in advance.



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