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Nokia 4A0-C04 Exam - Topic 1 Question 71 Discussion

Click the exhibit.Router R2 is advertising prefix 192.168.1.0/27 with community "no-advertise" towards AS 65002.Which routers receive an update for that prefix?
B) Routers R3 and R4 only.
A) Router R3 only.
C) Routers R3, R4 and R5 only.
D) Router R2 does not advertise an update for the prefix.

Nokia 4A0-C04 Exam - Topic 1 Question 71 Discussion

Actual exam question for Nokia's 4A0-C04 exam
Question #: 71
Topic #: 1
[All 4A0-C04 Questions]

Click the exhibit.

Router R2 is advertising prefix 192.168.1.0/27 with community "no-advertise" towards AS 65002.

Which routers receive an update for that prefix?

Show Suggested Answer Hide Answer
Suggested Answer: B

by Nakisha at Sep 14, 2024, 05:09 PM

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Willodean
9 months ago
Just to clarify, R2 won't advertise anything with that community tag.
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Shenika
9 months ago
I agree, D makes the most sense here.
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Carylon
10 months ago
Wait, are you sure? I thought it would still send to R3.
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Nobuko
10 months ago
Definitely D, no updates go out!
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Candra
10 months ago
R2 is using "no-advertise" for 192.168.1.0/27.
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Genevieve
10 months ago
I vaguely recall that "no-advertise" prevents advertising to other ASes, so I’m leaning towards D as well.
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Valentine
11 months ago
I’m not entirely sure, but I feel like R3 might still receive it since it’s directly connected. Maybe it’s A?
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Reynalda
11 months ago
I remember a practice question where a similar community was used, and it restricted updates. Could it be that R2 doesn't advertise it at all?
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Lynda
11 months ago
I think the "no-advertise" community means that the prefix won't be sent to any other AS, so maybe it's D?
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Vinnie
11 months ago
This is a good test of understanding BGP communities. I'll carefully review the behavior of the "no-advertise" community and make sure I understand how it affects route propagation before selecting my answer.
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Wilda
11 months ago
Okay, I think I've got it. The "no-advertise" community will prevent the prefix from being advertised to any other AS, so the only router that should receive the update is R2 itself. The answer is D.
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Vilma
11 months ago
I'm a bit confused on this one. The "no-advertise" community is supposed to prevent the route from being advertised, but the question asks who receives the update. I'll need to double-check the BGP behavior here.
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Rosendo
11 months ago
The question is pretty straightforward. The "no-advertise" community should prevent the prefix from being advertised to any other AS, so the answer is D.
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Soledad
11 months ago
Hmm, this looks like a tricky one. I'll need to carefully consider the BGP community "no-advertise" and how that affects the route propagation.
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Gaston
11 months ago
Ah, I see the issue now. The problem is that Service A is using the wrong keys to encrypt and sign the message for Service B. The solution is to use a shared session key between the two services, which will provide both confidentiality and authentication. I'll make sure to remember this pattern for the exam.
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Elliot
1 year ago
You know, if R2 really wanted to keep that prefix a secret, they should have just used the 'no-tweet' community instead.
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Thaddeus
1 year ago
R5 does not receive an update for that prefix.
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Ira
1 year ago
R2 should have been more careful with the community.
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Carmela
1 year ago
R3 and R4 receive an update for that prefix.
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Noelia
1 year ago
R2 should have used 'no-tweet' instead.
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Jacki
1 year ago
Ah, the 'no-advertise' community - it's like the router is saying 'shhh, this prefix is a secret!' D is the only logical choice.
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Rosalyn
1 year ago
So, only Router R2 does not advertise an update for the prefix.
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Vincenza
1 year ago
Yeah, Router R2 is not advertising the prefix with the 'no-advertise' community.
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Jacki
1 year ago
I think D is the correct answer.
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Dorinda
1 year ago
I'm guessing the 'no-advertise' community is the key here. If R2 doesn't share the prefix, then no other routers will receive the update. D is my pick.
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Luz
1 year ago
Exactly, the 'no-advertise' community prevents the prefix from being shared further.
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Julianna
1 year ago
So, the answer is D, Router R2 does not advertise an update for the prefix.
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Pura
1 year ago
I think you're right. If R2 is not advertising the prefix, then no other routers will receive the update.
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Goldie
1 year ago
Hmm, 'no-advertise' means the prefix won't be shared with anyone, so it has to be D. Tricky question, though!
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Gerald
1 year ago
Good catch on the 'no-advertise' community, D is the right choice.
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Aleshia
1 year ago
I agree, D is the correct answer here.
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Lisandra
1 year ago
Yeah, that's a sneaky one. Definitely D.
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Mariko
1 year ago
Yeah, it's definitely a tricky question, but D makes the most sense in this case.
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Janine
1 year ago
I think you're right, 'no-advertise' means the prefix won't be shared with anyone, so it has to be D.
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Candida
1 year ago
I think it's D too. 'No-advertise' means it won't be shared.
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Herminia
1 year ago
Wait, 'no-advertise' community? Isn't that like putting a 'do not read' sign on the prefix? D has to be the answer here.
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Xuan
1 year ago
I'm not sure about this one. Can someone explain why R5 is not included in the update?
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Kris
1 year ago
I agree with Delila. Router R2 is using the 'no-advertise' community, so only R3 and R4 will receive the update.
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Delila
1 year ago
I think the answer is B) Routers R3 and R4 only.
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