Well, I had a somewhat disapointing experience with the 291 and 293, scoring a 778 and 760 respectfully. I'd expect more from myself, but since I've never done less then 3 MS exams at once, I guess I can't expect too much from myself. It was hard trying to figure out what to study for the week before the tests since I had so much to study for. I also did 622 as well, which I posted in the Vista forums.
291 -
I didn't get anything on security templates, MBSA, RRAS policies, authentication protocols, Kerberos, or routing protocols. There was a great deal of DNS, DHCP, WSUS, IPSec, VPN, and performance/network monitoring questions. - Dynamik
I used this as the list of things to go over again the last week before my exam. I did recall getting a question or two relating to MBSA and security templates. I didn't have much on WSUS. I also felt the exam was a bit narrowed as did Dynamik, I was expecting a bit more of a variety of questions. 1 Sim that was rediculously easy and should have been put in 290 or something. Drag and drops of course.
293 - Unfortunately, seemed like 291 part duex. I don't recall many differences between the two other then Certificates of course. Maybe I should have taken 622 in between them so I have an obvious divider. 2 Sims here, not stupid ones fortunately. This seemed to have a lot of scenarios where you had to figure a bunch of server roles and various network configurations using a drag and drop type of interface, I swear I had like 6 or 7 of those.
I can't really offer much advice or tips for these as they seemed like one test for me. As everyone has said, taking these two close together is a smart Idea. I definately agree, take these as close together as you can. If you're just getting an MCSA, consider taking 93 as well just for
@#^@^ and giggles.