Refer to the exhibit. Router R1 must be configured to reach the 10.0.3.0/24 network from the 10.0.1.0/24 segment. Which command must be used to configure the route?

The mask `0.255.255.255` is an inverse mask often used in access control lists (ACLs) or specific routing scenarios, not the standard subnet mask for defining a /24 network in a static route.

`route add` is a command used in operating systems like Windows or Linux to add routes, not the correct command-line interface (CLI) syntax for Cisco IOS routers.

This command correctly uses the Cisco IOS `ip route` syntax, which requires the destination network (10.0.3.0), the network's subnet mask (255.255.255.0 for a /24 network), and the next-hop IP address (10.0.4.3) to forward traffic towards the target network.

This command uses an incorrect syntax (`route add`) for Cisco IOS devices and also includes an incorrect mask, making it invalid for configuring a static route on R1.