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Juniper JN0-351 Exam - Topic 1 Question 4 Discussion

Actual exam question for Juniper's JN0-351 exam
Question #: 4
Topic #: 1
[All JN0-351 Questions]

Which two events cause a router to advertise a connected network to OSPF neighbors? (Choose two.)

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Suggested Answer: A, D

Ais correct because when an OSPF adjacency is established, a router will advertise a connected network to OSPF neighbors.An OSPF adjacency is a logical relationship between two routers that agree to exchange routing information using the OSPF protocol1.To establish an OSPF adjacency, the routers must be in the same area, have compatible parameters, and exchange hello packets1.Once an OSPF adjacency is formed, the routers will exchange database description (DBD) packets, which contain summaries of their link-state databases (LSDBs)1.The LSDBs include information about the connected networks and their costs2. Therefore, when an OSPF adjacency is established, a router will advertise a connected network to OSPF neighbors through DBD packets.

Dis correct because when a static route to the 224.0.0.5 address is created, a router will advertise a connected network to OSPF neighbors.The 224.0.0.5 address is the multicast address for all OSPF routers3.A static route to this address can be used to send OSPF hello packets to all OSPF neighbors on a network segment3.This can be useful when the network segment does not support multicast or when the router does not have an IP address on the segment3.When a static route to the 224.0.0.5 address is created, the router will send hello packets to this address and establish OSPF adjacencies with other routers on the segment3. As explained above, once an OSPF adjacency is formed, the router will advertise a connected network to OSPF neighbors through DBD packets.


by Keneth at Oct 09, 2023, 05:49 AM

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Chan
3 months ago
Yeah, A is definitely correct!
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Ashlee
3 months ago
Wait, 224.0.0.5? Is that really a thing?
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Lanie
4 months ago
A is spot on, but D? Not so sure about that one.
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Pedro
4 months ago
I thought B was a thing too, but I guess not.
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Rickie
4 months ago
Definitely A and C! That's how it works.
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Glory
4 months ago
I’m confused about the static routes; I thought they were more about multicast addresses, but I can't recall which one is relevant here.
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Loren
4 months ago
I practiced a question similar to this, and I think creating a static route to 224.0.0.5 could trigger advertisements, so maybe D is right.
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Claribel
4 months ago
I'm not entirely sure, but I feel like the passive option means the router won't send updates, so B might not be correct.
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Angelica
5 months ago
I think I remember that OSPF advertises networks when an adjacency is established, so maybe A is one of the answers.
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Isidra
5 months ago
Alright, I've got a strategy for this. I'll start by eliminating the options that don't seem directly related to OSPF network advertisement, then focus on the remaining choices and try to remember the specific OSPF rules.
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Joye
5 months ago
I'm a bit confused by the options here. I'm not sure if creating a static route to a multicast address is related to OSPF network advertisement. I'll have to think this through carefully.
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Loren
5 months ago
Okay, let me think this through. I know OSPF advertises connected networks, so that's probably one of the answers. And I think the passive option has something to do with it too.
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Felicidad
5 months ago
This seems like a pretty straightforward OSPF question. I'm confident I can figure this out.
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Luke
5 months ago
Hmm, I'm a bit unsure about this one. I know OSPF has some specific rules around advertising networks, but I can't quite remember the details.
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Francoise
5 months ago
This seems like a straightforward question about customer profitability analysis. I'll focus on understanding the key terms and concepts related to that.
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Junita
5 months ago
Okay, let me see here. The key details are that there's a file being moved to an SFTP folder, and they want to send email notifications. I'm thinking either the File Drop Starting Source in Automation Studio or the File Drop Entry Source in Journey Builder could work, but I'll need to double-check the specifics.
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Remona
5 months ago
Okay, let me think this through. Sulfonylureas, DPP4 inhibitors, and GLP-1 agonists all work to increase insulin secretion, but I'm not sure if that's the same as preventing hyperglycemia in the muscle specifically.
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