You work as a network technician at Certkiller .com. Please study the exhibit carefully. In a Cisco Single-Site Secure Network Foundation implementation， which factor affects your choice of switch Configuration？（）

A.Phone+Desktop
B.Desktop
C.Switch
D.Router
E.Trunk

A.You may use Cisco Network Assistant to set up the initial configuration
B.You must use CLI for initial configuration
C.You may use either CLI or CAN for configuration
D.You may make a direct connection to the PC from any point on the switch
E.You may only make a direct connection from the port with the flashing green LED to the PC

A.To protect the network in case someone inadvertently creates a physical loop in it
B.To ensure that if a device fails another device automatically take over for it
C.To allow management of all network devices
D.To aggregate logical network groups together at one central point