Repair Cluster Network Nam in Windows Server 2012

Hi,

I am having issues as described in mention below KB link.

http://support.microsoft.com/kb/2838043

after applying this hotfix I have restart Nodes now I need to perform post installation task as described in article that's is simulate failure on Cluster Network Name and repair it .

 I am confuse and need  responses on below queries

1. What is the impact on services  running on this cluster like VM's , CSV  after pressing Simulate Failure.
2. Is this activity required any downtime?
3. Another question is if Cluster Network Name Resource fails how it effects cluster service?

Usama Arif