You work as a Network Administrator for On Dot Inc. The company has a Windows 2000-based
network. The management wants to install Internet Security and Acceleration (ISA) Server 2000 on
the network. This server will connect to the Internet through a T1 line. Which of the following
components is required to be installed on the server to accomplish this?

A.
External network adapter

B.
Modem

C.
Router

D.
ISDN adapter