How do you configure a static default route to next-hop 203.0.113.5 on a Cisco router?

• A. ip route 0.0.0.0 0.0.0.0 203.0.113.5
• B. ip route 0.0.0.0 0.0.0.0 192.0.2.1
• C. route-add 0.0.0.0/0 203.0.113.5
• D. ip default-gateway 203.0.113.5

Answer: (A)

Configuring a static default route on a Cisco router uses the ip route command with a destination of 0.0.0.0 and a mask of 0.0.0.0, followed by the next-hop address. This tells the router that for any destination not in its local networks, forward to that next-hop. The specified next-hop here is 203.0.113.5, so the exact command is ip route 0.0.0.0 0.0.0.0 203.0.113.5. This creates a default route in the routing table to that next-hop, meaning packets destined for anything not matched by a more specific route will be sent to 203.0.113.5.

The other options don’t fit: directing the default route to a different next-hop (192.0.2.1) wouldn’t meet the given requirement; using route-add is not valid Cisco IOS syntax; and ip default-gateway is a management-path setting for devices acting as hosts (or certain switches) and does not populate the router’s forwarding table with a default route.