How many different Microsoft Windows file types can be infected with a virus?

How can files be easily exchanged between systems whether local or remote, when various operating systems are involved, and when all systems support the TCP/IP protocol stack?

A. SMB B. NFS C. FTP D. Telnet

In Windows 7/Vista, an MMC is blank by default. What would you add to the MMC to populate it with programs?

A. Applets B. Files C. Directories D. Snap-ins