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Huawei H12-821_V1.0 Exam - Topic 1 Question 54 Discussion

On an OSPF network, an algorithm is used to prevent loops within an area, but loops may occur between areas. Therefore, OSPF defines a loop prevention mechanism for inter-area routes. Which of the following statements are true about the loop prevention mechanism?
B) All non-backbone areas must be directly connected to area 0.
A) Inter-area routes cannot be directly transmitted between non-backbone areas.
C) Inter-area routes need to be forwarded through area 0.
D) An ABR cannot inject Type 3 LSAs that describe routes to a network segment in an area back to the same area.

Huawei H12-821_V1.0 Exam - Topic 1 Question 54 Discussion

Actual exam question for Huawei's H12-821_V1.0 exam
Question #: 54
Topic #: 1
[All H12-821_V1.0 Questions]

On an OSPF network, an algorithm is used to prevent loops within an area, but loops may occur between areas. Therefore, OSPF defines a loop prevention mechanism for inter-area routes. Which of the following statements are true about the loop prevention mechanism?

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Suggested Answer: B

by Nana at Mar 19, 2024, 04:36 PM

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Anglea
7 months ago
D is definitely true, can't loop back like that.
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Tyra
7 months ago
Wait, I thought ABRs could inject Type 3 LSAs back?
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Viola
7 months ago
B seems a bit off, not all non-backbone areas need to connect directly.
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Lang
7 months ago
Totally agree, C is spot on too!
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Trina
7 months ago
A is true, non-backbone areas can't talk directly.
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Vincent
8 months ago
I'm a bit confused about the role of ABRs; I feel like they can inject LSAs back into the same area, but maybe that's not correct?
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Esteban
8 months ago
I practiced a question similar to this where we discussed Type 3 LSAs, and I think they do have to go through area 0 for inter-area routing.
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Destiny
8 months ago
I think all non-backbone areas do need to connect to area 0, but I can't recall if that's a strict requirement or just a best practice.
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Benedict
8 months ago
I remember something about area 0 being the backbone, but I'm not sure if inter-area routes can be sent directly between non-backbone areas.
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Stephaine
8 months ago
This question is testing my knowledge of OSPF in-depth. I'll need to carefully consider each statement and how it relates to the loop prevention mechanism.
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Yasuko
8 months ago
I'm feeling pretty confident about this. The key is remembering that OSPF uses a hierarchical design, and the backbone area is critical for inter-area routing.
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Lindsey
8 months ago
Okay, I've got a strategy - I'll focus on understanding the role of the backbone area (area 0) in OSPF and how that relates to the loop prevention mechanism.
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Justine
8 months ago
Hmm, I'm a bit confused about the differences between intra-area and inter-area routing in OSPF. I'll need to review that before attempting this.
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Huey
8 months ago
This looks like a tricky OSPF question. I'll need to think through the loop prevention mechanism carefully.
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Caren
9 months ago
I'm a bit confused on this one. I know that denial-of-service attacks can affect availability, but I'm not sure if that's the same as an exception generation attack. I'll have to review my notes on the different attack types and their impacts.
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Azzie
9 months ago
Okay, I think this is a position-based attribution model. The customer goes through a series of touchpoints before converting.
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Lonna
1 year ago
Hmm, I wonder if the loop prevention mechanism is a feature or a bug. Maybe OSPF should just embrace the chaos and let the routers duke it out.
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Alyce
1 year ago
This question is making my head spin. I'll just remember to always use area 0 for inter-area communication and hope for the best!
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Gregoria
12 months ago
Yes, and an ABR cannot inject Type 3 LSAs back to the same area to prevent loops.
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Matthew
1 year ago
That's a good strategy. It's important to remember that inter-area routes need to be forwarded through area 0.
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Avery
1 year ago
I always make sure to use area 0 for inter-area communication to avoid loops.
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Freeman
1 year ago
Wait, so OSPF can have loops between areas? I thought it was a loop-free protocol. What is this sorcery?
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Alyce
1 year ago
C) Inter-area routes need to be forwarded through area 0.
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Filiberto
1 year ago
B) All non-backbone areas must be directly connected to area 0.
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Denny
1 year ago
A) Inter-area routes cannot be directly transmitted between non-backbone areas.
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Myrtie
1 year ago
I think option D is also true. ABRs can't inject Type 3 LSAs back into the same area, which helps with loop prevention.
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Sunshine
1 year ago
User 2: That makes sense. It's an important mechanism to maintain the stability of the OSPF network.
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Osvaldo
1 year ago
User 1: I agree, option D is correct. It helps prevent loops by not allowing ABRs to inject LSAs back into the same area.
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Dominga
1 year ago
I believe option D is also true. An ABR cannot inject Type 3 LSAs back to the same area to prevent loops.
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Nadine
1 year ago
Option C seems correct to me. Inter-area routes need to be forwarded through area 0 to prevent loops between areas.
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Annabelle
1 year ago
That's correct. All non-backbone areas must be directly connected to area 0 to prevent loops.
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Jesus
1 year ago
So, inter-area routes cannot be directly transmitted between non-backbone areas, right?
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Mitzie
1 year ago
Yes, that's right. It helps prevent loops between areas on an OSPF network.
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Sharen
1 year ago
I think option C is correct. Inter-area routes do need to be forwarded through area 0.
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Anissa
1 year ago
I agree with Leanora. Option A makes sense as a loop prevention mechanism for inter-area routes.
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Leanora
1 year ago
I think option A is true because inter-area routes cannot be directly transmitted between non-backbone areas.
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