time-scale restrictions on tests

I have taken my first two MCAD exams (70-306 & 70-310), but my last
one was about a year ago. As long as the MCAD is available as a
certification, is there a time limit on how long it takes one to take
the exams? I plan to take my last one (70-305) next month.
Thanks!

 

There is no limit on when you can take your exams, as long as you take them
before they retire (and the MCAD exams are NOT scheduled for retirement any
time soon). For example, after I took my first MCSD exam I waited over two
years to take the remaining ones.
As long as you finish the exams before they retire, you could take almost
forever. For example, if you compare the number of certified people in August
to the number in June, you will see that nine people earned their MCSE in
Windows NT 4 during that time (I assume by finishing up some elective exams).
Since there may be an unplanned delay in your exam takings, I always
recommend taking the required exams first, because there are almost always
elective exams that retire later than the required exams do.