An administrator types in the command router ospf 1 and receives the error message:
"OSPF process 1 cannot start." (Output is omitted.)
What should be done to correctly set up OSPF?
Select the best response.
A.
Ensure that an interface has been configured with an IP address.
B.
Ensure that an interface has been configured with an IP address and is up.
C.
Ensure that IP classless is enabled.
D.
Ensure that the interfaces can ping their directly connected neighbors.
Answer: B
Explanation
OSPF can be only started when there is at least one interface up and configured with an IP address on the router.
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