You have a computer that runs Windows 7. IPv6 is disabled on the computer. The computer has the following IPv4 settings:
*
* IP address: 10.1.1.193
* Subnet mask: 255.255.0.0
* Default gateway: 10.1.1.194
* Preferred DNS server: 10.1.1.195

You need to ensure that the computer can only communicate with computers on the local subnet.
What should you do?

A.
Delete the default gateway address.

B.
Delete the preferred DNS server IP address

C.
Configure the subnet mask to use 255.255.255.0

D.
Configure the subnet mask to use 255.255.255.192