To make OSPF area 4 a totally stubby area, which two things need to be done? (Choose two.)
A.
Apply the area 4 stub command to all routers in the area.
B.
On the ABR, use the area 4 stub command with the no-summary keyword.
C.
On the ABR, specify a default cost for the area with the area default-cost command.
D.
On the ABR, use the default-information originates command to inject a default route into area
4.
E.
Use the auto-cost command on each router in the area to automatically determine the cost to
other OSPF areas.
Explanation:
To make an area “totally stubby” we must apply the “area area-idstub no-summary” command
on the ABR and area area-id stub” commands to all other routers in that area.
Note: The ABR in a totally stubby area does not create Type 3 summary LSA. It only creates a
default route to outside destinations.