A Linux Administrator Is Using a Linux System as a Router

Multiple Choice

A Linux administrator is using a Linux system as a router. During the tests, the administrator discovers that IP packets are not being sent between the configured interfaces. Which of the following commands enables this feature for IPv4 networks?

A) cat /proc/sys/net/ipv4/ip_route > 1
B) echo "1" > /proc/sys/net/ipv4/ip_forward
C) echo "1" > /proc/sys/net/ipv4/ip_route
D) echo "1" > /proc/sys/net/ipv4/ip_net