Exam 350-501 topic 1 question 104 discussion

Actual exam question from Cisco's 350-501

Question #: 104
Topic #: 1

Refer to the exhibit. Router BRDR-1 is configured to receive the 0.0.0.0/0 and 172.17.1.0/24 networks via BGP and advertise them into OSPF area 0. An engineer has noticed that the OSPF domain is receiving only the 172.17.1.0/24 route and default route 0.0.0.0/0 is still missing. Which configuration must an engineer apply to resolve the problem?

A. router ospf 1 redistribute bgp 65001 metric 100 route-policy BGP-TO-OSPF end
B. router ospf 1 default-information originate end
C. router ospf 1 default-metric 100 end
D. router ospf 1 default-information originate always end

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Suggested Answer: B 🗳️

by jefranca at Nov. 5, 2021, 10:24 a.m.

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rm868

Highly Voted 1 year, 12 months ago

the different between B and D, is for "default-information originate" you must have a default route in the routing table whereas with "default-information originate always" it will still redistribute a default route even if there isnt one in the table. In this case there is a learned default route via bgp so i believe the answer is B.

upvoted 12 times

Djohan23

1 year, 1 month ago

great explanation.

upvoted 1 times

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thejag

Most Recent 8 months, 3 weeks ago

Agreed B

upvoted 1 times

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jefranca

2 years ago

I guess D is better

upvoted 1 times

craterman

1 year, 10 months ago

We receives default route via BGP. If we loose it we should stop to announce it into OSPF domain. But if you set "default-information originate always" the default route will remain. So the best choice is to use the "default-information originate". The answer is B.

upvoted 7 times

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Exam 350-501 topic 1 question 104 discussion

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rm868

Djohan23

thejag

jefranca

craterman

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