Answer:
True
Step-by-step explanation:
It is true that the router commands used to configure and enable the FastEthernet 0/1 router interface with the IP address of 10.10.20.250 and a subnet mask of 255.255.0.0 are:
ROUTER# conf t
ROUTER(config)# int fa0/1
ROUTER(config-if)# ip address 10.10.20.250 255.255.0.0
ROUTER(config-if)# no shut