HOTSPOT
Your network contains a RADIUS server named Server1.
You install a new server named Server2 that runs Windows Server 2012 R2 and has
Network Policy Server (NPS) installed.
You need to ensure that all accounting requests for Server2 are forwarded to Server1.
On Server2, you configure a Connection Request Policy.
What else should you configure on Server2?
To answer, select the appropriate node in the answer area.
Answer: 
Explanation:
Remote RADIUS Server Policies
I think the answer is Connection Request Policies.
You have to change the policy order for it to work!
The default policy that is already there on row 1 will always be true, so all authentications will stay on Server2.
You need to check the order!
The answer is confusing. On the answer area it says “Remote RADIUS Server Groups” but in the explanation it’s showing about changing the “Connection Request Policy”. So what could be the real answer.
I think since it does not have the machine to forward the request so we would need to configure and add it on the “Remote RADIUS server groups”. Then the next step would be “Connection Request Policies”.
The question says and I quote
“On Server2, you configure a Connection Request Policy.”
so why are people talking about creating a connection request policy when the question tells you that has already been done?
“What else should you configure on Server2?”
forwarding requests sounds like RADIUS to me
Magwif is spot on, you have a policy so “to ensure that all accounting requests for Server2 are forwarded to Server1”. You need to be sure Server1 is in the proper “Server Group”. The explanation is showing you why B is correct by showing you where a group can be created and/or assigned.
B is correct.