The 272 exam for me, personally, was the hardest as it required you to remember certain nit picky things like the exact word for word instructions on how to change the way 'IE' deals with ActiveX controls. I had 40 questions on 272 with 90 minutes, I had 861/1000.
The 271 exam was much easier (even though I had a lower score.. if that makes any sense) and it basically requires you to remember permissions defaults and how printers react when being shared and windows xp installation things.. not to technical. I had 49 questions on 271 with 120 minutes, I had 833/1000.
If you want any of the PDF's with questiown from both priot exams Bungral, just drop me a PM.. they helped me immensly.