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Exam 300-410 topic 1 question 228 discussion

Actual exam question from Cisco's 300-410
Question #: 228
Topic #: 1
[All 300-410 Questions]


Refer to the exhibit. Which configuration enables OSPF for area 0 interfaces to establish adjacency with a neighboring router with the same VRF?

  • A. router ospf 1 vrf CCNP network 10.1.1.1 0.0.0.0 area 0 network 10.2.2.2 0.0.0.0 area 0
  • B. router ospf 1 interface Ethernet1 ip ospf 1 area 0.0.0.0 interface Ethernet2 ip ospf 1 area 0.0.0.0
  • C. router ospf 1 vrf CCNP interface Ethernet1 ip ospf 1 area 0.0.0.0 interface Ethernet2 ip ospf 1 area 0.0.0.0
  • D. router ospf 1 vrf CCNP network 10.0.0.0 0.0.255.255 area 0
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️

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Malasxd
Highly Voted 2 years ago
Selected Answer: C
"A" and "C" works. I choose "C" due to keyword "interfaces". The chance to be wrong is lower hehehe
upvoted 9 times
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azzawim
Highly Voted 2 years, 1 month ago
Selected Answer: C
Question mention interface
upvoted 5 times
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CiscoTerminator
Most Recent 4 months, 2 weeks ago
Selected Answer: A
what's wrong with A? being specific in OSPF is not wrong or a misconfig...
upvoted 1 times
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[Removed]
10 months, 2 weeks ago
Selected Answer: C
C is correct Areas are identified through a 32-bit area field; thus, Area ID 0 is the same as 0.0.0.0 I think the whole purpose of this question is to test your knowladge of this information. https://www.sciencedirect.com/topics/computer-science/backbone-area#:~:text=Areas%20are%20identified%20through%20a%2032%2Dbit%20area%20field%3B%20thus%2C%20Area%20ID%200%20is%20the%20same%20as%200.0.0.0.
upvoted 3 times
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XBfoundX
11 months, 2 weeks ago
I will go for A because the C goes in the router ospf mode first, actually is not needed, you can go directly to the interfaces and activate ospf. The A one is more correct in therm of what you are doing based on the commands inserted, actually the network staatement just enable ospf in the interface is the same thing, but here we can see that there is a motivation of going in the ospf vrf process
upvoted 1 times
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darkspawn117
1 year, 5 months ago
Selected Answer: A
Both A and C would seem correct, but considering C looks to have a typo (should be area 0, not area 0.0.0.0) I am going with A.
upvoted 2 times
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ZamanR
1 year, 5 months ago
C is the right answer
upvoted 3 times
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Fenix7
1 year, 9 months ago
Can't be C because the area is 0, and not 0.0.0.0. The answer is A
upvoted 3 times
Commando1664
1 year, 2 months ago
dotted decimal can be used
upvoted 5 times
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fizzer
1 year, 9 months ago
Option C seems like the best bet seeing as "Interface" was stressed in the question Both configuration works as already highlighted by others, however, "show ip protocols" shows option A's configuration under "Routing for networks" whereas it shows option C's configuration under "Routing for Interfaces configured explicitly for Area:" I think the idea behind the question is which of the 2 configuration commands put the interface under the explicit configuration in "show ip protocols" Option A is intentionally meant to sway, because it uses the Interface IP address rather than the network address, however it does not show under explicit interface configuration in "show ip protocols"
upvoted 2 times
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Wolfxx
1 year, 9 months ago
I agree with answer "C", because when question says "Which configuration enables OSPF for area 0 interfaces", it's closer.
upvoted 1 times
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HungarianDish_111
2 years, 1 month ago
I also labbed it in CML. Same result as for Huntkey. Both "A" and "C" work. "A" uses 0.0.0.0 wildcard masks in the network statement, so ospf is enabled only on a specific interface. "C" is associating the ospf process directly under the interface configuration. Both solutions seems to be OK.
upvoted 3 times
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forccnp
2 years, 3 months ago
Selected Answer: C
Key word in the question is 'interfaces', C is the correct one
upvoted 2 times
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ttt00909
2 years, 4 months ago
Selected Answer: A
A desu
upvoted 2 times
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PimplePooper
2 years, 5 months ago
Selected Answer: A
A is correct. Both interfaces fall within the ospf network statements.
upvoted 4 times
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jarz
2 years, 6 months ago
I'm leaning toward C as both A and C are valid configs. I think the key word in the question is 'interfaces', SOPF needs to enabled on interfaces only.
upvoted 3 times
Slinky
2 years, 2 months ago
I would tend to agree, but the network statements in A use 0.0.0.0 wildcard masks and thus can only apply to the IP addresses of the interfaces themselves. I suppose you could take it a step further and say that if you changes the IP on the interface then the network statement wouldn't apply anymore, but that seems unlikely. I don't love this question.
upvoted 1 times
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NoUserName1234
2 years, 7 months ago
Selected Answer: A
A is correct
upvoted 1 times
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Huntkey
2 years, 7 months ago
I tried in the lab and both A and C work. Anything I am missing here?
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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