which percentage of authentication requests will another server manage?

DRAG DROP
You manage a Network Policy Server (NPS) infrastructure that contains four servers named NPSPRX01,
NPS01, NPS02, and NPS03. All servers run Microsoft Windows Server 2012 R2. NPSPRX01 is configured
as an NPS proxy. NPS01, NPS02, and NPS03 are members of a remote RADIUS server group named GR01.
GR01 is configured as shown below:

You need to ensure that authentication requests are identified even when a server is unavailable.
If a given server is unavailable, which percentage of authentication requests will another server manage?
To answer, drag the appropriate value to the correct scenario. Each value may be used once, more than
once, or not at all. You may need to drag the split bar between panes or scroll to view content.

Answer: See the explanation

Explanation:
Box 1: 95%Box 2: 5%
Box 3: 0%
Box 4: 0%
Note:
* From the exhibit we have:
NPS01: weight 30, priority: 5
NPS02: weight 50, priority: 90
NPS03: weight 20, priority: 5
Box 3: If NPS03 is unavailable it cannot handle any requests.
Box 4: NPS04 is not mentioned in this question.
* Priority. Priority specifies the order of importance of the RADIUS server to the NPS proxy server.
Priority level must be assigned a value that is an integer, such as 1, 2, or 3. The lower the number, the
higher priority the NPS proxy gives to the RADIUS server. For example, if the RADIUS server is assigned
the highest priority of 1, the NPS proxy sends connection requests to the RADIUS server first; if servers
with priority 1 are not available, NPS then sends connection requests to RADIUS servers with priority 2,
and so on. You can assign the same priority to multiple RADIUS servers, and then use the Weight setting
to load balance between them.
* Weight. NPS uses this Weight setting to determine how many connection requests to send to each
group member when the group members have the same priority level. Weight setting must be assigned
a value between 1 and 100, and the value represents a percentage of 100 percent. For example, if the
remote RADIUS server group contains two members that both have a priority level of 1 and a weight
rating of 50, the NPS proxy forwards 50 percent of the connection requests to each RADIUS server.
Load Balancing with NPS Proxy
https://technet.microsoft.com/en-us/library/dd197433(v=ws.10).aspx