Refer to the exhibit. How would you get the 1.1.1.1 network into the OSPF database?

A.
Configure RTA as an ASBR.

B.
Redistribute connected routes on RTA into OSPF.

C.
Set up a virtual link between area 1 and area 0.

D.
Set up a virtual link between area 1 and area 2.

E.
Add a static route into RTB and enter it into OSPF.

F.
Place a network 1.1.1.0 0.0.0.0 command into RTB.

G.
Set up a unique router ID on RTA using an RFC 1918 address

H.
Change area 0 on RTB to area 1

Explanation:
Recall that in OSPF, area 0 is called backbone area and all other areas connect directly to it. In
the exhibit above, area 1 is not directly connected with area 0 so we need to set up a virtual link
between area 1 & area 0 so that the networks in area 1 can be recognized in area 0. The virtuallink configuration is shown below:
RTB(config)#router ospf 1
RTB(config-router)#area 2 virtual-link 1.1.1.1
RTA(config)#router ospf 1
RTA(config-router)#area 2 virtual-link 2.2.2.2
Notice that the router-id in the “area … virtual-link ” command is the router-id of the neighboring
router.