Microsoft 70-346 Exam

How many servers should you deploy?

You are the Office 365 administrator for your company. The company has a single office.
You have the following requirements:
— You must configure a redundant Active Directory Federation Services (AD FS) implementation.
— You must use a Windows Internal Database to store AD FS configuration data.
— The solution must use a custom login page for external users.
— The solution must use single sign-on for internal users.
You need to deploy the minimum number of servers.
How many servers should you deploy?

  • A. 2
  • B. 4
  • C. 6
  • D. 16
Answer: Option B.
Explanation: 

To provide redundancy, we would need to create AD FS farms with at least two servers. This can be used to allow internal users to use single sign-on (SSO).
As we are using Windows Internal Database (WIM) to store AD FS configuration data, we do not need any additional servers for the database as WIM is included in Windows Server 2008 and later versions. Redundancy for WIM is possible when an AD FS farm is set up.
To support external users, we would need to set up an AD FS proxy server. In order to provide redundancy we would need to set up an AD FS proxy farm. This would require a minimum of 2 more servers.
The custom login page for external users can be created on the AD FS proxy server, which the external users would access. There is thus no need for additional servers.
Thus the minimum number of server we would require is four: two for the AD FS farm and two for the AD FS proxy farm.
References:
https://technet.microsoft.com/en-us/library/gg982488.aspx
http://blogs.technet.com/b/askpfeplat/archive/2013/07/22/faq-on-adfs-part-1.aspx

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