A quick question about MCSD(Web Applications)

Good evening. I am new to this site and found it very helpful. I have a quick question regarding MCSD(Web Applications). I am planning to take it by December 2016. My questions are:
1. Am I allowed to take 3 exams (70-480, 70-486 & 70-487) withing one to two weeks?
2. On the "Schedule Exam" page, at the right side there is a video options for these courses. For the 70-486 & 70-487, when I clicked their videos - I got this message: "Sorry, you've reached a retired course. Check out this suggested course: Level Intermediate | Published: 1 year ago Introduction to ASP.NET Core (formerly ASP.NET 5)".

Here is the links:
https://www.microsoft.com/en-us/learning/exam-70-486.aspx
https://www.microsoft.com/en-us/learning/exam-70-487.aspx

At this point, I am confused, are these courses (70-486 & 70-487) retired? If not, why am I having these message.

I'd truly appreciate any suggestion and reply. Thank you!