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Exam 200-301 topic 1 question 494 discussion

Actual exam question from Cisco's 200-301
Question #: 494
Topic #: 1
[All 200-301 Questions]

Refer to the exhibit. An OSPF neighbor relationship must be configured using these guidelines:
✑ R1 is only permitted to establish a neighbor with R2.
✑ R1 will never participate in DR elections.
✑ R1 will use a router-id of 10.1.1.1.
Which configuration must be used?
A.

B.

C.

D.

Show Suggested Answer Hide Answer
Suggested Answer: A
by g_mindset at Sept. 3, 2022, 1:20 p.m.

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g_mindset
Highly Voted 2 years, 10 months ago
OSPF uses port 89 and does not use a transport protocol. A is the answer. EIGRP port 88.
upvoted 35 times
EthanhuntMI6
2 years, 6 months ago
Thank you.
upvoted 1 times
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f2killer
2 years, 1 month ago
if this is the right answer how the router id is gonna be 10.1.1.1?? In answer D the router id it will assign the loopback.
upvoted 1 times
f2killer
2 years, 1 month ago
iam wrong. i see now router id ...
upvoted 5 times
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PerryThePlatypus
1 year, 8 months ago
The port 88 is not even among the well-known ports, and if you search for the OSPF protocol in the official documentation, it doesn't mention port 88 for the passage of the relevant packets... but i mean, now you know it...
upvoted 2 times
PerryThePlatypus
1 year, 8 months ago
Sorry, i mean "Port 89"
upvoted 1 times
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daddydagoth
Highly Voted 2 years, 4 months ago
Another thing wrong with answer D is that the command "ospf router ID" is wrong. EIGRP's command is "EIGRP router ID", OSPF uses "Router ID"
upvoted 8 times
[Removed]
2 years, 1 month ago
B, C, D all use ospf router ID.
upvoted 4 times
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MinSun600
Most Recent 11 months, 2 weeks ago
what is host 224.0.0.5 is that the subnet mask it can't be the wiled card someone tell me please
upvoted 1 times
MarkFromMilan
7 months, 1 week ago
224.0.0.5 is the multicast address of the DR in an OSPF broadcast network
upvoted 1 times
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ShanRamu
12 months ago
Answer is A no DR election so priority should be 0, which leads us to A and D only advertise to R2, so this leaves loopback, giving the answer A
upvoted 1 times
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[Removed]
1 year, 3 months ago
A is correct OSPF uses port 89 OSPF uses command: router-id EIGRP uses Command: EIGRP router-id
upvoted 5 times
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Dadits
1 year, 5 months ago
command is router id no ospf router id you can justify the answer just from this!Save time!
upvoted 3 times
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PyoJH
1 year, 7 months ago
I understand that A is the answer. By the way, is it possible to establish an ospf relationship between R1 and R2 if the ACL is applied properly? R1 receives R2's hello packet, but R1 can't send hello packets because of deny 89 any any, so isn't the relationship not established?
upvoted 1 times
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kyleptt
1 year, 11 months ago
Setting the Ospf priority as zero is the reason why A is the answer.
upvoted 3 times
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OrwellMB
2 years ago
Exhibit is: R1 -> Fa0/0 ".1" connection line: 10.100.1.0 R2 -> Fa0/0 ".2" that's it, no other info
upvoted 2 times
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ccnk
2 years ago
There is no exhibit.
upvoted 2 times
[Removed]
1 year, 8 months ago
we don't need at all
upvoted 1 times
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Olebogeng_G
2 years ago
Where is the exhibit?
upvoted 2 times
[Removed]
2 years ago
It's missing :(
upvoted 1 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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