Exam 300-410 topic 1 question 63 discussion

Actual exam question from Cisco's 300-410

Question #: 63
Topic #: 1

Refer to the exhibit.

BGP and EIGRP are mutually redistributed on R3, and EIGRP and OSPF are mutually redistributed on R1. Users report packet loss and interruption of service to applications hosted on the 10.1.1.0/24 prefix. An engineer tested the link from R3 to R4 with no packet loss present but has noticed frequent routing changes on
R3 when running the debug ip route command.
Which action stabilizes the service?

A. Reduce frequent OSPF SPF calculations on R3 that cause a high CPU and packet loss on traffic traversing R3.
B. Tag the 10.1.1.0/24 prefix and deny the prefix from being redistributed into OSPF on R1.
C. Place an OSPF distribute-list outbound on R3 to block the 10.1.1.0/24 prefix from being advertised back to R3.
D. Repeat the test from R4 using ICMP ping on the local 10.1.1.0/24 prefix, and fix any Layer 2 errors on the host or switch side of the subnet.

Show Suggested Answer

Suggested Answer: B 🗳️

by ciscomicha at Jan. 17, 2022, 2:51 p.m.

Comments

Submit Cancel

ciscomicha

Highly Voted 3 years, 3 months ago

Given answer is correct. B is the only one with makes sence. A = this is not an action C = Outbound to fix advertisments back into R3? Inbound would be good but this doesn't fix the problem D = No L2 issue The Issue is that the AD from IBGP is 200. Highter than the AD from OSPF (110) or external EIGRP (170)

upvoted 12 times

...

bk989

Most Recent 8 months, 2 weeks ago

When we want to remove something from the routing table we have to apply it inbound. The outbound distribute-list is used for LSA type 5 filtering. https://networklessons.com/ospf/ospf-distribute-list-filtering#:~:text=Configuration&text=When%20we%20want%20to%20remove,for%20LSA%20type%205%20filtering.&text=You%20have%20to%20be%20very,on%20R2%20instead%20of%20R3.

upvoted 1 times

bk989

8 months, 2 weeks ago

Answer = B. Distribute list out work in this case since the route is external type 5, but distribute list out on R3 doesn't work.

upvoted 1 times

...

[Removed]

10 months ago

Selected Answer: B

B is correct

upvoted 1 times

...

Ll123123

1 year, 6 months ago

Selected Answer: B

Choose B. Because C apply on R3 out which is not correct

upvoted 1 times

...

xziomal9

3 years ago

Selected Answer: B

The correct answer is: B

upvoted 1 times

...

Exam 300-410 All Questions

View all questions & answers for the 300-410 exam

Exam 300-410 topic 1 question 63 discussion

Comments

ciscomicha

bk989

bk989

[Removed]

Ll123123

xziomal9

SY0-701