5
這個問題是：考試70-487（開發Windows Azure和Web服務）在Windows Azure中，我們如何選擇我們需要多少升級域來實現可伸縮性？
的問題是：
You are developing a Microsoft Azure web application. The application will be deployed to
10 web role instances. A minimum of 8 running instances is needed to meet scaling
requirements.
You need to configure the application so that upgrades are performed as quickly as
possible, but do not violate scaling requirements.
How many upgrade domains should you use?
選項是
A. 1
B. 2
C. 5
D. 10
我的問題是會是什麼正確答案，爲什麼？我們如何才能解決問題陳述。
由於