Using the following figure, if traffic enters Router A for a destination address of 198.44.4.7, what must be configured to allow routing to the host?

Nothing needs to be done since the IP address of 198.44.4.5/24 is configured on Fa0/1. This shows that the network of 198.44.4.0/24 is connected to Fa0/1. Configuring the command ip route 198.44.4.0 255.255.255.0 198.44.4.5 would not achieve anything because the network is configured on the interface already. Configuring the command ip route 198.44.4.0 255.255.255.0 fast 0/1 would not achieve anything because the interface already belongs to the network of 192.168.4.0/24. The command of ip route 198.44.4.0/24 fast 0/1 is normally not a valid command because the network mask is expressed in dotted-decimal form.