The Web application accesses files that are secured by NTFS permissions and are located in a folder named Projects.
Several Domain.com users that have permissions to the files and are able to access the files through the corporate network, report that they cannot access the files through the Web application. You open the Web.config file for the Web application and notice the elements shown in the following exhibit.

<identity impersonate=”true”/>
<authentication mode=”Windows”/>

You need to configure IIS to allow user access to the files through the Web application.
What should you do?

A.
Disable anonymous access.

B.
Change Authentication Mode to None.

C.
Change Authentication Mode to Forms.

D.
Change Authentication Mode to Passport.

Explanation:
Identity Impersonation allows IIS to run the Web application under the credentials of the identity authenticated by IIS. By default, this is the IUSR_PRODUCTION account. IUSR_PRODUCTION probably does not have the required NTFS permissions to the files. When anonymous access is disabled, IIS is forced to authenticate the user accessing the Web application.

Incorrect Answers:
A: Passport authentication requires that users have a Microsoft passport as it is used to authenticate users against the Microsoft Passport system. However, NTFS permissions makes use of Active Directory user accounts.
B: Setting the Authentication mode to None disables authentication. You need to have IIS authenticate users against Active Directory. You should therefore not change Windows authentication.
C: The Forms Authentication allows you to use a custom login page to authenticate users against any data store. This will require a custom login page.