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Exam 200-301 topic 1 question 427 discussion

Actual exam question from Cisco's 200-301
Question #: 427
Topic #: 1
[All 200-301 Questions]

Refer to the graphic. R1 is unable to establish an OSPF neighbor relationship with R3. What are possible reasons for this problem? (Choose two.)

  • A. All of the routers need to be configured for backbone Area 1.
  • B. R1 and R2 are the DR and BDR, so OSPF will not establish neighbor adjacency with R3.
  • C. A static route has been configured from R1 to R3 and prevents the neighbor adjacency from being established.
  • D. The hello and dead interval timers are not set to the same values on R1 and R3.
  • E. EIGRP is also configured on these routers with a lower administrative distance.
  • F. R1 and R3 are configured in different areas.
Show Suggested Answer Hide Answer
Suggested Answer: DF 🗳️

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xdxp23
Highly Voted 3 years, 8 months ago
I like D and E for this. How is F possible if you can clearly see them in the same area according to the graphic? Thoughts anyone?
upvoted 28 times
mohamed1999
3 years, 8 months ago
what they mean with area is like group. so if you are now in the same group you can't see each other.
upvoted 5 times
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Dante_Dan
3 years, 4 months ago
EIGRP will not prevent OSPF to form an adjacency with other routers. So answer E could not be correct.
upvoted 8 times
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DaBest
3 years, 7 months ago
i agree this should be D and E, unless they want us to answer this question baised on theory alone then yeah D and F are the answers. they must have answered that without looking at the graphic
upvoted 3 times
daddydagoth
2 years, 2 months ago
It can never be E as an answer. Having EIGRP configured with a lower AD (by default the AD is lower already so that's a hint that this is wrong), the only thing that happens is that The router runs both protocols and will prefer EIGRP's routes to the same destination over the OSPF routes. This will not, in any way, distrupt the OSPF adjecencies.
upvoted 7 times
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PaddyInNZ
1 year, 5 months ago
The reason that option 'F' is correct is because the graphic is the *intended* topology. If there is an EIGRP instance running, this will not stop the neighbour relationship from forming - it just means that the OSPF route will not be promoted into the routing table.
upvoted 3 times
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nickname_fordiscussions
Highly Voted 3 years ago
Umm.. They're all clearly in Area 0. There's a huge circle that says Area 0. All of the routers are in the same area..
upvoted 10 times
BraveBadger
3 years ago
Yup, but the question basically says "it's not working, what could cause it to not work" I always try to keep in mind that the graphic is solely giving a topology and not necessarily the config. So many tricks they play.
upvoted 11 times
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gay104
Most Recent 9 months, 2 weeks ago
i think is C and E. C because if i configure a static route on R1, i should have to configure another static route on R3, so R3 can't see an OSPF adjacency
upvoted 2 times
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[Removed]
1 year ago
Selected Answer: DF
D & F are correct i think the Area 0 in the graphic is a mistake form the website
upvoted 1 times
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Yannik123
1 year, 6 months ago
Selected Answer: DF
Answer is correct Hello/Dead Timer ans Area ID must be the same
upvoted 1 times
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sabsyed
1 year, 7 months ago
Selected Answer: DF
D F ARE correct
upvoted 1 times
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shaney67
1 year, 8 months ago
strange question, as the graphic shows all routers are in the same area?
upvoted 3 times
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shumps
1 year, 8 months ago
D & E. Whats the reason of the exhibit then when we can clearly see area 0 in place
upvoted 1 times
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dropspablo
1 year, 11 months ago
Selected Answer: DF
Correct the answer. EIGRP does not prevent them from forming neighborhood adjacencies, it can only interfere with the routing table. A configuration of areas different from the proposed in the graph would prevent adjacencies.
upvoted 3 times
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shiv3003
2 years ago
B and D
upvoted 2 times
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Rether16
2 years, 1 month ago
This comment is pure shite! Theyre clearly in the same area as theyre circled as Area 0!
upvoted 3 times
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Aie_7
2 years, 2 months ago
Tricky question. Topology shows AREA 0
upvoted 2 times
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Dutch012
2 years, 2 months ago
how D & F are correct? R3 is able to form a neighbor relationship with R2, the same thing with R1 is able to form a neighbor relationship with R2, if D & F were correct these two relations mentioned above should not be created.
upvoted 1 times
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Goena
2 years, 4 months ago
Selected Answer: DE
I think D and E. They're all clearly in Area 0. Cisco doesn't mention anything about EIGRP. There is a possibility that is configured.
upvoted 2 times
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Customexit
2 years, 6 months ago
I can see it as, yeah it says area 0 in the picture, but perhaps F is saying it's "configured" in different areas.
upvoted 1 times
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Nnandes
2 years, 12 months ago
D & F are correct.
upvoted 2 times
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Aleks123
3 years, 4 months ago
The graphic is such a bait here to make the wrong mistake like the default vlan question where its 1. Noticing a trend here lol?
upvoted 1 times
sgashashf
3 years, 2 months ago
Yeah. Cisco's tests are honestly super scummy.
upvoted 8 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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