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Juniper JN0-351 Exam - Topic 7 Question 23 Discussion

You have two OSPF routers forming an adjacency. R1 has a priority of 32 and a router ID of 192.168.1.2. R2 has a priority of 64 and a router ID of 192.168.1.1. The routers were started at the same time and all other OSPF settings are the default settings.Which statement is correct in this scenario?
B) Router IDs must match for an adjacency to form. and C) R2 will be the BDR.
A) At least three routers are required for a DR/BDR election
D) R1 will be the BDR.

Juniper JN0-351 Exam - Topic 7 Question 23 Discussion

Actual exam question for Juniper's JN0-351 exam
Question #: 23
Topic #: 7
[All JN0-351 Questions]

You have two OSPF routers forming an adjacency. R1 has a priority of 32 and a router ID of 192.168.1.2. R2 has a priority of 64 and a router ID of 192.168.1.1. The routers were started at the same time and all other OSPF settings are the default settings.

Which statement is correct in this scenario?

Show Suggested Answer Hide Answer
Suggested Answer: B, C

Bis correct because the loops do not exist is one of the conditions that are verified by the receiving router to ensure that the received BGP route is valid.A loop in BGP means that a route has been advertised by the same AS more than once, which can cause routing instability and inefficiency1.To prevent loops, BGP uses the AS-path attribute, which lists the AS numbers that a route has traversed from the origin to the destination2.The receiving router checks the AS-path attribute of the received route and discards it if it finds its own AS number in the list2. This way, BGP avoids accepting routes that contain loops.

Cis correct because the next hop is reachable is one of the conditions that are verified by the receiving router to ensure that the received BGP route is valid.The next hop is the IP address of the next router that is used to forward packets to the destination network3.The receiving router checks the next hop attribute of the received route and verifies that it has a valid route to reach it3.If the next hop is not reachable, the received route is not usable and is rejected by the receiving router3. This way, BGP ensures that only feasible routes are accepted.


by Ira at Jul 06, 2024, 09:30 AM

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Desmond
7 months ago
Definitely not A or B, those are incorrect.
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Francine
8 months ago
Wait, are you sure about that? I thought it was based on router ID too.
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Chantay
8 months ago
I think R2 will be the BDR, right?
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Rebbecca
8 months ago
Actually, only two routers are needed for DR/BDR election.
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Beatriz
8 months ago
R2 has a higher priority, so it should be the DR.
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Elin
9 months ago
I recall that router IDs don’t need to match for adjacency, so that rules out option B. I think R2 being the BDR makes sense based on the priorities.
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Kent
9 months ago
I’m a bit confused about the election process. I thought you needed at least three routers for a DR/BDR, but I guess it can still happen with just two?
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Stephen
9 months ago
I think I saw a practice question where the router with the highest priority becomes the DR, so maybe R2 will be the BDR since it has a higher priority than R1.
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Cory
9 months ago
I remember that OSPF uses the highest priority for DR/BDR elections, but I'm not sure how that plays out with the router IDs.
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Lilli
9 months ago
The key is understanding how the priority and router ID values impact the election. I think I can work through this systematically.
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Leonora
9 months ago
Hmm, I'm a bit unsure about the DR/BDR election process with just two routers. I'll need to review that part of the OSPF protocol.
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Chauncey
9 months ago
I'm pretty confident I know the answer here. The priority and router ID values will determine the DR and BDR election.
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Nguyet
9 months ago
Okay, let's think this through step-by-step. We have two OSPF routers forming an adjacency, and the question is asking which statement is correct.
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Micah
9 months ago
This question seems straightforward, but I want to make sure I understand the key details before answering.
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Latanya
9 months ago
Variance could also be a possibility, but I'm not as familiar with that concept in this specific context. I'll have to do some quick research to be sure.
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Harrison
1 year ago
Hold up, option A is wrong. You only need two routers for a DR/BDR election, not three.
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Graciela
1 year ago
That makes sense, R2 with a priority of 64 will indeed be the BDR.
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Tricia
1 year ago
I believe R2 will be the BDR since it has a higher priority.
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Nicholle
1 year ago
So, which option do you think is correct in this scenario?
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Tammy
1 year ago
You're right, option A is incorrect. Only two routers are needed for a DR/BDR election.
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Marleen
1 year ago
No way, man! R1 has a lower router ID, so it will be the BDR according to option D.
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Jesusita
1 year ago
That's right, R1 will be the BDR because it has a lower router ID.
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Alease
1 year ago
R1 will be the BDR.
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Rossana
1 year ago
I think option C is correct. Since R2 has a higher priority of 64, it will be elected as the BDR.
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Shonda
1 year ago
I agree with Pete, R1 will be the BDR based on the priority setting.
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Pete
1 year ago
I disagree, I believe R1 will be the BDR because it has a lower priority.
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Rebecka
1 year ago
I think R2 will be the BDR.
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