View the exhibit.
Exhibit 1

Exhibit 2

Area 1 and Area 2 in the topology are associated with/21 subnets, shown in Exhibit 1. All of the
switches in this topology are HP Provision ASIC switches, and they have established the
appropriate adjacencies.
In Area 1, one of the/24 subnets within the/21 range, 10.1.19.0/24, is not used. The network
administrator must prevent unnecessary traffic from entering Area 1 if users attempt to reach an
address in the unused range. What can the administrator do that meets this requirement without
disrupting the solution?

A.
Create a static route to 10.1.19.0/24 with the black hole option on routing switch A (and other area 1 routers).

B.
Remove the stub definition for Area 1 on all routers and routing switches in Area 1.

C.
Suppress the advertisement of the default route in Area 1 on routing switch B, the area border
router (ABR).

D.
Enter range 10.1.19.0/24 no-summary in the OSPF configuration context of routing switch B,
the area border router (ABR).