You are the network consultant from passguide.com. Do you know what attacks are software based attacks that disable your computer and attack user by e-mail?（）

A.It reads the Layer-5 information and sends the message directly to the intended computer.
B.It reads the Media Access Control (MAC) address and sends the message directly to the intended computer.
C.It reads the Layer-5 information and broadcasts the message to all the computers that are connected to the switch.
D.It reads the Media Access Control (MAC) address and broadcasts the message to all the computers that are connected to the switch.

A.IP telephones
B.Voice gateways
C.Call management software
D.Media Convergence Servers (MCSs)