Refer to the exhibit. What additional commands should be used to configure OSPF area 5
as a Totally Stubby area?

hostname R4
!
router ospf 1
network 10.1.45.0 0.0.0.255 area 5
network 172.16.24.0 0.0.0.255 area 0
network 172.16.34.0 0.0.0.255 area 0
hostname R5
!
router ospf 1
network 10.1.45.0 0.0.0.255 area 5

A.
area 0 stubon routers R4 and R5

B.
area 5 stubon routers R4 and R5

C.
area 5 stub no-summaryon routers R4 and R5

D.
area 0 stub no-summary on router R4 and area 5 stub no-summaryon router
R5

E.
area 5 stub no-summaryon router R4 and area 5 stubon router R5

Explanation:
To define a totally stub area, use the area area-id stub no-summarycommand on the ABR
(in OSPF router configuration) and thearea area-id stub on the totally stub router. The ABR
will inject a default route into the area so routers in this type of area only see routing
information local to their area, plus a default route pointing to the ABR, from which they can
reach all other areas and all other networks