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Juniper JN0-351 Exam - Topic 7 Question 17 Discussion

Actual exam question for Juniper's JN0-351 exam
Question #: 17
Topic #: 7
[All JN0-351 Questions]

Which statement about aggregate routes is correct?

Show Suggested Answer Hide Answer
Suggested Answer: B, C

Option B is correct.Flooding is a mechanism used in Layer 2 bridging where the switch sends incoming packets to all its ports except for the port where the packet originated1.This is done when the switch doesn't know the destination MAC address or when the packet is a broadcast or multicast1.

Option C is correct.Learning is another mechanism used in Layer 2 bridging where the switch learns the source MAC addresses of incoming packets and associates them with the port on which they were received23.This information is stored in a MAC address table, also known as a bridge table23.

Option A is incorrect.Blocking is a state in Spanning Tree Protocol (STP) used to prevent loops in a network2.It's not a mechanism used in building and maintaining a Layer 2 bridge table2.

Option D is incorrect.Listening is also a state in Spanning Tree Protocol (STP) where the switch listens for BPDUs to make sure no loops occur in the network before transitioning to the learning state2.It's not a mechanism used in building and maintaining a Layer 2 bridge table2.


by Josphine at Apr 28, 2024, 05:46 AM

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Mose
4 months ago
B sounds too broad, not all subnets get auto-generated routes.
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Reita
5 months ago
A is definitely incorrect, dynamic protocols can use aggregates too.
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Francesco
5 months ago
Wait, are you saying they can't be used in dynamic routing? That seems off.
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Rebecka
5 months ago
Totally agree with D! It's all about summarization.
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Agustin
5 months ago
Aggregate routes are used for summarizing prefixes.
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France
6 months ago
I vaguely recall that aggregate routes aren't automatically generated for all subnets. I think they need to be configured manually, but I could be wrong.
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Chan
6 months ago
I’m a bit confused about the preference of aggregate routes. I thought specific routes were usually preferred unless there’s a specific reason not to.
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Almeta
6 months ago
I feel like option D makes the most sense since aggregate routes are all about summarizing prefixes, right?
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Ceola
6 months ago
I think aggregate routes can be used with dynamic protocols, but I'm not entirely sure. I remember something about that in class.
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Ronald
6 months ago
I'm pretty confident that aggregate routes can be used for both static and dynamic routing protocols, so option A is incorrect. I'll double-check the other options to be sure.
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Douglass
6 months ago
Okay, I think I've got this. Aggregate routes are used to advertise summarized network prefixes, which helps reduce the size of routing tables. That sounds like option D to me.
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Laquanda
6 months ago
Hmm, I'm a bit confused about the distinction between static and dynamic routing protocols when it comes to aggregate routes. I'll need to review that concept.
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Melvin
6 months ago
This question seems straightforward, but I want to make sure I understand the differences between aggregate routes and specific routes before answering.
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Matt
6 months ago
I'm not entirely sure about this one. The question mentions the Network Testing Companion, but it's not clear if we need to install anything else. I'll have to think this through carefully.
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Dean
6 months ago
Whoa, this is a tricky one. I'm not super confident in my ability to solve this type of problem. Maybe I should review the EVA formula again before attempting it.
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Dacia
11 months ago
Haha, I bet someone wrote that B option just to see who would fall for it. Aggregate routes are definitely not auto-generated!
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Mertie
10 months ago
Definitely not option B. Aggregate routes need to be configured manually for summarization.
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Leonor
10 months ago
Yeah, that's right. Aggregate routes are not automatically generated for all subnets.
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Eva
10 months ago
I think the correct statement is D) Aggregate routes are used for advertising summarized network prefixes.
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Alecia
11 months ago
A is incorrect. Aggregate routes can be used with both static and dynamic routing protocols.
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Rory
10 months ago
D) Aggregate routes are used for advertising summarized network prefixes.
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Markus
10 months ago
C) Aggregate routes are always preferred over more specific routes, even when the specific routes have a better path.
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Laurena
10 months ago
B) Aggregate routes are automatically generated for all of the subnets in a routing table.
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Tawna
12 months ago
C sounds like a trap answer. Aggregate routes are not always preferred over more specific routes. The more specific route would be chosen if it has a better path.
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Malcom
10 months ago
So, D is the correct answer then. Aggregate routes are not automatically generated for all subnets in a routing table.
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Shawn
10 months ago
So, D is the best choice when it comes to understanding aggregate routes.
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Sharen
10 months ago
I agree with you. C does sound like a trap answer. More specific routes are preferred if they have a better path.
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Sharan
11 months ago
I think D is the correct answer. Aggregate routes are used for advertising summarized network prefixes.
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Beckie
11 months ago
C is definitely a trap answer. More specific routes are preferred over aggregate routes if they have a better path.
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Gail
11 months ago
I agree, D makes sense. It's important to have a clear understanding of aggregate routes.
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Dottie
11 months ago
I think D is the correct answer. Aggregate routes are used for advertising summarized network prefixes.
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Carmen
12 months ago
But aggregate routes are used for summarizing network prefixes, so D makes more sense.
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Ashlyn
12 months ago
I disagree, I believe it's C.
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Carmen
12 months ago
I think the correct statement is D.
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Glennis
12 months ago
I'm not sure, but I think aggregate routes are always preferred over more specific routes.
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Grover
12 months ago
I agree with Cristina, aggregate routes are used for advertising summarized network prefixes.
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Pansy
12 months ago
I'm pretty sure B is wrong. Aggregate routes are not automatically generated for all subnets in a routing table.
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Jose
11 months ago
I agree, D is the correct option. Aggregate routes are indeed used for advertising summarized network prefixes.
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Jose
11 months ago
I think D is the correct statement. Aggregate routes are used for advertising summarized network prefixes.
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Cristina
12 months ago
I think the correct statement about aggregate routes is D.
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Tu
1 year ago
I think D is the correct answer. Aggregate routes are used to advertise summarized network prefixes, which helps to reduce the size of routing tables.
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Fairy
11 months ago
Yes, that's correct. Aggregate routes are not automatically generated for all subnets in a routing table.
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Vicente
11 months ago
So, aggregate routes are not automatically generated for all subnets in a routing table, right?
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Quinn
11 months ago
That's true. Aggregate routes are used for advertising summarized network prefixes, making routing more efficient.
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Kimi
11 months ago
I agree, D is the correct answer. Aggregate routes help to reduce the size of routing tables by advertising summarized network prefixes.
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