Which network device and interface configuration meets the minimum requirements for this installation?

Refer to the exhibit.

A network device needs to be installed in the place of the icon labeled Network Device to accommodate a leased line attachment to the Internet.

Which network device and interface configuration meets the minimum requirements for this installation?
A . a router with two Ethernet interfaces
B . a switch with two Ethernet interfaces
C . a router with one Ethernet and one serial interface
D . a switch with one Ethernet and one serial interface
E . a router with one Ethernet and one modem interface

Answer: C

Explanation:

Only a router can terminate a leased line attachment access circuit, and only a router can connect two different IP networks. Here, we will need a router with two interfaces, one serial connection for the line attachment and one Ethernet interface to connect to the switch on the LAN.