Set Default Route for All Traffic on Cisco Device

A

The correct answer is A.

Explanation:

The default route is used to forward packets to a destination network that is not explicitly listed in the routing table. It is also known as the gateway of last resort.

To set the default route for all traffic to an interface, you need to use the "ip route" command followed by the IP address of 0.0.0.0 and the subnet mask of 0.0.0.0. This tells the router that all packets should be forwarded to the interface specified.

The correct syntax for this command is:

scssCopy code
router(config)#ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/1 

In this command, "GigabitEthernet0/1" is the interface to which all traffic should be forwarded. You can replace it with the appropriate interface name for your network.

Option B, "default-information originate always" is a command used in a routing protocol such as OSPF to advertise the default route to other routers in the network. It does not set the default route on the local router.

Option C, "ip route 0.0.0.0 255.255.255.255 GigabitEthernet0/1" is also incorrect because it specifies a subnet mask of 255.255.255.255 which is a host address, not a network address. This command would only route traffic to a specific IP address, not all traffic.

Option D, "default-information originate" is a command used in a routing protocol such as OSPF to advertise the default route to other routers in the network. It does not set the default route on the local router. Additionally, the "always" keyword is missing from this option, which means the default route will only be advertised if there is already a default route in the routing table.