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Exam 300-410 topic 1 question 254 discussion

Actual exam question from Cisco's 300-410
Question #: 254
Topic #: 1
[All 300-410 Questions]


Refer to the exhibit. A network engineer must establish communication between three different customer sites with these requirements:
* Site-A: must be restricted to access to any users at Site-B or Site-C.
* Site-B and Site-C: must be able to communicate between sites and share routes using OSPF.
PE interface configuration:
interface FastEthernet0/0
ip vrf forwarding Site-A
!
interface FastEthernet0/1
ip vrf forwarding SharedSites
!
interface FastEthernet0/2
ip vrf forwarding SharedSites
Which configuration meets the requirements?

  • A. PE(config)#router ospf 10 vrf Site-A PE(config-router)#network 0.0.0.0 255.255.255.255 area 0 PE(config)#router ospf 10 vrf SharedSites PE(config-router)#network 0.0.0.0 255.255.255.255 area 1
  • B. PE(config)#router ospf 10 vrf Site-A PE(config-router)#network 0.0.0.0 255.255.255.255 area 0 PE(config)#router ospf 20 vrf SharedSites PE(config-router)#network 0.0.0.0 255.255.255.255 area 1
  • C. PE(config)#router ospf 10 vrf Site-A PE(config-router)#network 0.0.0.0 255.255.255.255 area 0 PE(config)#router ospf 10 vrf SharedSites PE(config-router)#network 0.0.0.0 255.255.255.255 area 0
  • D. PE(config)#router ospf 10 vrf Site-A PE(config-router)#network 0.0.0.0 255.255.255.255 area 0 PE(config)#router ospf 20 vrf SharedSites PE(config-router)#network 0.0.0.0 255.255.255.255 area 0
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
by chris7890 at Sept. 18, 2022, 6:41 p.m.

Comments

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jarz
Highly Voted 2 years, 7 months ago
Selected Answer: D
Answer is D And before you ask, you need unique process IDs in each VRF.
upvoted 23 times
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1chung
Most Recent 1 month, 2 weeks ago
Selected Answer: B
I think is B
upvoted 1 times
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CiscoTerminator
3 months, 1 week ago
Selected Answer: B
what is wrong with B and having different areas? not getting that part.
upvoted 1 times
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[Removed]
9 months, 2 weeks ago
Selected Answer: D
D is correct
upvoted 1 times
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diskman
1 year ago
Selected Answer: D
The OSPF area must be 0 for the both OSPF VRF instances and the OSPF process ID must be different for each respectively
upvoted 2 times
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Rajnivas02
1 year ago
I would choose Answer D as it's in only area 0 B also correct as the traffic can flow between areas. Anythoughts ?
upvoted 1 times
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bk989
1 year, 1 month ago
B also has different process-id: why cannot use two ospf Domains?
upvoted 1 times
d8a1b94
1 year, 1 month ago
Hey bk For me, B is disqualified since the OSPF config for vrf "SharedSites" only contains a area 1 network and this implicit means that there is no area 0 which is mandatory.
upvoted 1 times
bk989
8 months, 3 weeks ago
area 0 is not mandatory in OSPF. However area 0 is mandatory to propagate routes in OSPF I think (this is where LSA 1 and 2 becomes LSA 3) ~ so to share info between router a to b and c b and c should be in area 0. Better to lab this I think.
upvoted 1 times
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inteldarvid
1 year, 9 months ago
Selected Answer: D
Correct is "D"
upvoted 1 times
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chris7890
2 years, 7 months ago
Selected Answer: D
I think the correct Answer is D
upvoted 4 times
IceFireSoul
2 years, 7 months ago
Why you think answer is D ? What your reasoning ?
upvoted 1 times
jarz
2 years, 7 months ago
you need to configure different process ID in the VRFs
upvoted 4 times
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Almylle
1 year, 10 months ago
Because you need to configure diferent process ID, the area is independent because of the VRF, but in this case the process ID is not independent.
upvoted 3 times
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C (25%)
B (20%)
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