You are a desktop support technician for your company. The corporate network has a domain controller that runs Microsoft Windows Server 2003 and computers that run Microsoft Windows XP Professional and Windows Vista Business. You set up group policies on the domain controller.

When you logon to the corporate network, only the comptuers that run Windows Vista Business are able to retrieve the updated policies.

You need to process the group policy for all the computers on the corporate network. Which Internet Control Message Protocol (ICMP) setting should you enable?

A.
Allow incoming echo request

B.
Allow incoming mask request

C.
Allow outgoing source quench

D.
Allow outgoing parameter problem