Refer to the exhibit. What method can be used to enable an OSPF router to advertise a default route to neighboring OSPF routers?

Last Updated: May 8, 2026
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Refer to the exhibit. What method can be used to enable an OSPF router to advertise a default route to neighboring OSPF routers?

  • Use a static route pointing to the ISP and redistribute it.
  • Use a static route pointing to the ISP and redistribute it.
  • Use the redistribute static command on R0-A.
  • Use the default-information originate command on ISP.
  • Use the default-information originate command on R0-A.

Explanation: To enable an OSPF router to advertise a default route to its neighbors, the edge router (known as the Autonomous System Boundary Router or ASBR) must be configured with a default static route and the default-information originate command. In this scenario, R0-A is the edge router connected to the ISP; therefore, entering this command on R0-A instructs it to become the source of the default route information and propagate that route in OSPF updates to R0-B and R0-C.

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