You had installed an Active Directory Federation Services (AD FS) role on a Windows server
2008 in your organization.
Now you need to test the connectivity of clients in the network to ensure that they can
successfully reach the new Federation server and Federation server is operational.
What should you do? (Select all that apply)

A.
Go to Services tab, and check if Active Directory Federation Services is running

B.
In the event viewer, Applications, Event ID column look for event ID 674.

C.
Open a browser window, and then type the Federation Service URL for the new
federation server.

D.
None of the above

Explanation:
http://technet.microsoft.com/en-us/library/cc734875.aspx
Verify
Verify that a specific event (ID 674) was generated on the federation server proxy computer.
This event is generated when the federation server proxy is able to successfully
communicate with the Federation Service.
To perform this procedure, you must be a member of the local Administrators group, or you
must have been delegated the appropriate authority.
1. Log on to a client computer with Internet access.

2. Open a browser window, and then type the Uniform Resource Locator (URL) for the
Federation Service endpoint, along with the path to the clientlogon.aspx page that is stored
on the federation server proxy.
3. Press ENTER.
Note -At this point your browser should display the error Server Error in ‘/adfs’ Application.
This step is necessary to generate event message 674 to verify that the clientlogon.aspx
page is being loaded properly by
Internet Information Services (IIS).
4. Log on to the federation server proxy.
5. Click Start, point to Administrative Tools, and then click Event Viewer.
6. In the details pane, double-click Application.
7. In the Event column, look for event ID 674.