Juniper JN0-351 Exam - Topic 7 Question 16 Discussion

Actual exam question for Juniper's JN0-351 exam

Question #: 16
Topic #: 7

You deployed a new EX Series switch with DHCP snooping enabled and you do not see any entries in the snooping databases for an interface. Which two Juniper configurations for that interface caused this issue? (Choose two.)

AThe interface is configured as a disabled port.

BMAC limiting is enabled on the interface.

CThe interface is configured as a trunk port.

DDynamic ARP inspection is enabled on the interface.

Show Suggested Answer

Suggested Answer: B, D

The two reasons for the failure to form an adjacency in a network running IS-IS could be:

B) There is no configured ISO address on any IS-IS interface.IS-IS requires each router interface to have an ISO address configured.Without this address, the routers cannot form an adjacency1.

D) The family iso configuration is missing from the adjacency interface.The 'family iso' configuration is essential for IS-IS to function correctly.If this configuration is missing from the adjacency interface, it could prevent the formation of an adjacency1.

These explanations are based on the Enterprise Routing and Switching Specialist (JNCIS-ENT) documents and learning resources available at Juniper Networks23.

by Samira at Apr 22, 2024, 09:45 AM

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Chanel

6 months ago

Dynamic ARP inspection shouldn't affect DHCP snooping, right?

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Antonio

6 months ago

Wait, can a trunk port really cause this issue? Sounds odd.

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Laurel

6 months ago

I think MAC limiting could also be a factor here.

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Launa

7 months ago

Totally agree, that would stop DHCP snooping from working.

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Sylvie

7 months ago

The interface is configured as a disabled port.

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Vanda

7 months ago

Dynamic ARP inspection sounds like it could interfere, but I’m not positive if it directly affects DHCP snooping. I need to double-check that.

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Tayna

7 months ago

I feel like trunk ports might not work with DHCP snooping, but I can't recall the specifics. It’s a bit fuzzy for me.

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Leslie

7 months ago

I’m not entirely sure, but I think MAC limiting could also prevent entries from being recorded. I’ve seen similar questions before.

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Edison

8 months ago

I remember that if the interface is disabled, it definitely won't log any DHCP snooping entries. That seems like a likely option.

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Billi

8 months ago

I'm a little confused by this question. I understand the concept of DHCP snooping, but I'm not sure how the specific interface configurations would impact it. I'll need to think this through carefully and review my notes.

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Donte

8 months ago

Okay, I've got this. The key is to look for interface configurations that would prevent DHCP traffic from being seen and recorded in the snooping database. Disabled ports and trunk ports would both do that, so I'll select those.

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Elke

8 months ago

Hmm, I'm a bit unsure about this one. I know DHCP snooping is used to monitor DHCP traffic, but I'm not sure how the interface configuration could impact that. I'll need to review the Juniper documentation on DHCP snooping.

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Zachary

8 months ago

This question seems straightforward. I'll focus on the DHCP snooping configuration and think about what could prevent the snooping database from being populated.

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Elfrieda

8 months ago

Hmm, I'm a bit unsure about the fiber interface type. Is it single mode or multi-mode? That could make a difference in the answer.

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Derick

8 months ago

Ah, I've got this one! The main purpose of a workshop is to bring people together to work towards a common goal and produce tangible outputs. So option B is clearly the right answer here. Easy peasy!

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Deandrea

8 months ago

I think Cisco Workload Optimization Manager could be the answer since it focuses on managing and optimizing workloads effectively.

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Marisha

1 year ago

Whoa, Juniper really knows how to keep us on our toes with these DHCP snooping questions. Time to brush up on my trunk port and ARP inspection knowledge!

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Denae

1 year ago

I'm confident it's C and D. Trunk ports and dynamic ARP inspection seem like the most likely culprits here.

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Dona

1 year ago

Ha, I bet it's B and D. MAC limiting and dynamic ARP inspection - Juniper just loves to throw in those curveballs!

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Aleta

11 months ago

User 3: I'll make sure to double check those configurations next time I deploy a new switch.

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Xuan

11 months ago

User 2: Yeah, Juniper switches can be tricky sometimes with all these different settings.

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Tonja

12 months ago

User 1: I think it's B and D too. Those configurations can definitely cause issues.

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Domingo

1 year ago

I'm going with A and C. A disabled port and a trunk port would both prevent DHCP snooping from working properly.

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Katy

12 months ago

We should double check those configurations to make sure they are causing the problem.

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Cyndy

12 months ago

Yeah, having a disabled port and a trunk port would definitely impact the DHCP snooping.

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Daren

1 year ago

I think it's A and C too. Those configurations would definitely cause the issue.

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Margurite

1 year ago

Hmm, I'm thinking it's B and C. MAC limiting and trunk ports can definitely cause issues with DHCP snooping.

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Trina

1 year ago

Yeah, MAC limiting and trunk ports can definitely cause issues with DHCP snooping. Good call.

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Leonor

1 year ago

I think it's B and C too. Those configurations can definitely impact the snooping databases.

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Walker

1 year ago

I don't think it's because of MAC limiting. I believe the interface being configured as a trunk port could also be causing the issue.

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Selma

1 year ago

I agree with Antonio, that could be one of the reasons. Maybe MAC limiting is also enabled on the interface.

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Antonio

1 year ago

I think the issue might be because the interface is configured as a disabled port.

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