You are trying to connect to an FTP server on the Internet from a computer in a school lab. You cannot get a connection. You try on another computer with the same results. The computers in the lab are able to browse the Internet.
You are able to connect to this FTP server from home.
What could be blocking the connection to the server?
A. A layer-2 switch
B. A wireless access point
C. A firewall
D. A layer-2 hub
