Surfind microsoft web site , I saw one thing.
Curently I'm learning and geting my exam's for my MCSA , I'm MCP already , 70-290,70-270 , next to 70-291.
I saw that I can alternate one of the elective's with MCDST : ( wchich is 70-271+70-272 ) so I can become MCDST,MCP and MCSA to and in the future MCSE to

.
It's a good thing to do ?
How are this exam's , I mean , 70-271+70-272 , hard , easier , than 70-270 or 70-290 per example ?
How much time should I learn for one , I saw on microsft site , that both exam's taining can be acomplished in 6 day's , 3 one and 3 another one.
Are this exam's hard to get ? What is all about there , I mean , I like to learn , I'm 18 , not a job yet. learn thing's in all domain's.
What do you recomend me ? Please any recomend's from people who know what they are telling. Thank's all , in advance