Exam 350-501 topic 1 question 295 discussion

Actual exam question from Cisco's 350-501

Question #: 295
Topic #: 1

Refer to the exhibit. EIGRP is running between routers R5 and R1, and OSPF is used in the rest of the network. Users in a network attached to router R3 need to access a server connected to R5. Which task must the engineer perform so that only the users attached to R3 are able to access the server, but no other network is shared to OSPF?

A. Configure redistribution using route maps to filter the routes that are shared
B. Configure redistribution using an offset list to filter the routes that are shared.
C. Configure an OSPF virtual link between R1 and R3 to route traffic between the two areas.
D. Configure R1 as a stub router for EIGRP and OSPF so that only the default route is shared

Show Suggested Answer

Suggested Answer: A 🗳️

by chst at Jan. 18, 2023, 6:38 p.m.

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joeneo

9 months, 4 weeks ago

Selected Answer: A

A is the logical one

upvoted 1 times

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jospinales

1 year, 2 months ago

router ospf 1 redistribute eigrp 1 subnets route-map R5-to-OSPF route-map R5-to-OSPF permit 10 match ip address prefix-list Server-Network ! ip prefix-list Server-Network seq 5 permit 192.168.5.0/24 A is Correct

upvoted 1 times

thejag

1 year ago

But that will make the server network (eg 192.168.5.0/24) available to both R3 AND R4. The question says "only the users attached to R3 are able to access the server..." ?

upvoted 3 times

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1234512345

1 year, 3 months ago

Selected Answer: A

I'm not happy to think about this question, but A is ok. We can announce in ospf the route to the server and in eigrp only networks from R3, then the packets from the rest of the clients from other networks will be discarded for the reason no route to respond. The question is a bit tricky!

upvoted 2 times

thejag

1 year, 3 months ago

I think A also The other options are just wrong Virtual links are to connect an area that is not connected to backbone area 0 to area 0, offset list only increases metric on EIGRP, R1 as stub in both EIGRP and OSPF will not give the result we need.

upvoted 1 times

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thejag

1 year, 3 months ago

This does not make any sense to me

upvoted 1 times

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chst

1 year, 5 months ago

is A correct? where did you put the routemap to that only the users attached to R3 are able to access the server? I think the correct is create a virtual link

upvoted 1 times

nottoday2077

1 year, 4 months ago

I don't think any of the answers are complete in this scenario. Problem with the virtual link is those are for area's not connected to 0, not an issue here, also, how do you get the routes from EIGRP into OSPF? Need to redistribute. However I'm not happy with A either, as that still allows other routers to access the routes from R5.

upvoted 1 times

kirrim

6 months ago

You only redistribute the server's prefix into OSPF, and only redistribute R3's prefixes into EIGRP.

upvoted 1 times

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