Which action must you perform on your OSPF router to so…

You are connecting your OSPF router to your customer’s RIP router and redistributing the customer’s routes
into your OSPF domain. Your OSPF routes is part of an NSSA and the ABR is injecting an OSPF default route,
which you have advertised to your customer. After committing the configuration, you notice a routing loop
between your OSPF router and the customer’s RIP router.
Which action must you perform on your OSPF router to solve this problem?

A.
Enable Type 7-to-Type 5 LSA conversion.

B.
Set the customer-facing interface to passive.

C.
Convert the area to a stub area.

D.
Change the OSPF external route preference.

Explanation:
Avoid routing loops by changing the OSPF external route preference.
Incorrect Answers:
A: If multiple NSSA ABR routers are present, it is recommended that not all ABRs perform Type 7-to-5
translation to avoid routing loops.
B: We would have to make the interface on the RIP router, the customer router, passive, not the customerfacing interface on the OSPF router.
Note: By default RIP broadcasts are sent from all interfaces. RIP allows us to control this behavior. We can
configure which interface should send RIP broadcast or which not. Once we mark any interface as passive
interface, RIP will stop sending updates from that interface.
https://www.juniper.net/documentation/en_US/junos15.1/topics/topic-map/ospf-stub-and-not-sostubby-areas.html