Refer to the exhibit. Which two statements are true about a loopback interface that is configured on the Core router. All the connections to the branches should participate in OSPF. The link to the IS

Question

Exhibit

Options

• ACore(config-router)# default-information originate Core(config-router)# network 10.0.0.0 0.255.255.255 area 0 Core(config-router)# exit Core(config)# ip route 0.0.0.0 0.0.0.0 10.10.2.14
• BCore(config-router)# default-information originate Core(config-router)# network 10.10.2.13 0.0.0.242 area 0 Core(config-router)# exit Core(config)# ip route 0.0.0.0 0.0.0.0 10.10.2.14
• CCore(config-router)# default-information originate Core(config-router)# network 10.10.2.16 0.0.0.15 area 0 Core(config-router)# exit Core(config)# ip route 0.0.0.0 0.0.0.0 10.10.2.14
• DCore(config-router)# default-information originate Core(config-router)# network 10.10.2.32 0.0.0.31 area 0 Core(config-router)# exit Core(config)# ip route 0.0.0.0 0.0.0.0 10.10.2.14

• A
  33% (19)
• B
  7% (4)
• C
  47% (27)
• D
  12% (7)

Explanation

The correct configuration must: (1) use 'default-information originate' to advertise the default route into OSPF, (2) use a 'network' statement that matches only the branch-facing interfaces (not the ISP link), and (3) configure a static default route pointing to the ISP next-hop (10.10.2.14). Option C uses 'network 10.10.2.16 0.0.0.15 area 0' - this wildcard mask covers addresses .16 through .31, which matches the branch-side interfaces while excluding the ISP link. Option A uses an overly broad wildcard that would include the ISP-facing interface. Options B and D use incorrect wildcard ranges that don't properly match only the branch interfaces. The static default route 'ip route 0.0.0.0 0.0.0.0 10.10.2.14' is the same across all options.

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