Answer :
The correct command sequence to configure a router to run OSPF and add network 10.1.1.0/24 to area 0 is router ospf 1network 10.1.1.0 0.0.0.255 area 0. The answer is C. router ospf 1 network 10.1.1.0 0.0.0.255 area 0.
To configure a router for OSPF and add network 10.1.1.0/24 to area 0, you would use the command sequence: "router ospf 1" to initiate OSPF process with a process ID of 1 (which can be any number), followed by "network 10.1.1.0 0.0.0.255 area 0". This command designates the network address 10.1.1.0 with a wildcard mask of 0.0.0.255, indicating the specific subnet range to participate in OSPF, and assigns it to area 0.
The wildcard mask specifies which bits in the IP address should be considered when determining network membership. In this case, the wildcard mask of 0.0.0.255 means that only the last octet (the last 8 bits) of the IP address is considered, allowing devices with IP addresses within the range of 10.1.1.0 to 10.1.1.255 to participate in OSPF.
The answer is C. router ospf 1 network 10.1.1.0 0.0.0.255 area 0.
