Sean Is Studying at a Friend's House and Notices That

Multiple Choice

Sean is studying at a friend's house and notices that he can connect to the wireless network without entering a wireless network key.What does this indicate about the network?

A) He can use the network only for a limited time.
B) The network connection is probably not secure.
C) He cannot connect to the Internet from the network.
D) The network most likely uses a firewall for protection.