A border router should be placed on which of the following?

A.
Web server

B.
IDS server

C.
Screened subnet

D.
Domain boundary

Explanation:

A border router should be placed on a (security) domain boundary. Placing it on a web server or
screened subnet, which is a demilitarized zone (DMZ) would not provide any protection. Border
routers are positioned on the boundary of the network, but do not reside on a server.