Your computer is part of a workgroup. You share files with other users on the network. You configure exceptions in Microsoft Windows Firewall to allow file sharing. Users report that they are unable to connect to your computer.
You need to ensure that other users are able to access only the shared files.
 What should you do?（）

You have a computer that runs Windows Vista.
You need to ensure that active content can be automatically displayed when you insert a CD.
What should you do?（）