Which option is not valid for using the public Internet as a backup WAN medium?
A.
IP Security (IPSec) tunnels
B.
Shared PVC
C.
IP routing without constraints
D.
Generic Routing Encapsulation (GRE) tunnels
Explanation:
Which option is not valid for using the public Internet as a backup WAN medium?
Which option is not valid for using the public Internet as a backup WAN medium?
A.
IP Security (IPSec) tunnels
B.
Shared PVC
C.
IP routing without constraints
D.
Generic Routing Encapsulation (GRE) tunnels
Explanation: