Identify the statement that would create a default route using a gateway of 192.168.1.1.

`netstat` is primarily used for displaying network connections, routing tables, and interface statistics, not for adding routes.

`route default 192.168.1.1` is syntactically incorrect; it lacks the `add` keyword and `gw` specifier.

`ip route default 192.168.1.1` is incomplete for the `ip` command; the correct syntax would be `ip route add default via 192.168.1.1`.

The `route add default gw 192.168.1.1` command is the correct and standard syntax to add a default gateway using the `route` command. The `default` keyword specifies the default route, and `gw` (or `gateway`) specifies the next-hop IP address for that route.

`ifconfig` is used for configuring network interfaces, not for adding default routes; `defaultgw` is not a valid parameter for `ifconfig`.