Your network contains a server named Server1 that runs Windows Server 2008 R2. Server1 has the Network_Policy Server (NPS) role installed.
You need to ensure that the NPS log files on Server1 contain information of client connections.
What should you do?

A.
Enable the Accounting requests settings.

B.
Enable the Authentication requests settings.

C.
Configure the IAS (Legacy) log file format.

D.
Configure the DTS Compilant log file format.

Explanation:
The DTS Compliant log format is the newest one and only its XML have attributes fot session duration such as Acct-Session-Time = “The length of time (in seconds) for which the session has been active.