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Juniper JN0-351 Exam - Topic 6 Question 24 Discussion

You are asked to connect an IP phone and a user computer using the same interface on an EX Series switch. The traffic from the computer does not use a VLAN tag, whereas the traffic from the IP phone uses a VLAN tag.Which feature enables the interface to receive both types of traffic?
A) native VLAN and D) voice VLAN
B) DHCP snooping
C) MAC limiting

Juniper JN0-351 Exam - Topic 6 Question 24 Discussion

Actual exam question for Juniper's JN0-351 exam
Question #: 24
Topic #: 6
[All JN0-351 Questions]

You are asked to connect an IP phone and a user computer using the same interface on an EX Series switch. The traffic from the computer does not use a VLAN tag, whereas the traffic from the IP phone uses a VLAN tag.

Which feature enables the interface to receive both types of traffic?

Show Suggested Answer Hide Answer
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 Britt at Jul 14, 2024, 07:30 AM

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Mattie
7 months ago
Not sure about that... sounds too simple!
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Kristeen
8 months ago
Wait, can both traffic types really share the same interface?
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Dorian
8 months ago
Voice VLAN is the way to go here.
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Elouise
8 months ago
I thought it was native VLAN?
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Virgie
8 months ago
Definitely the voice VLAN!
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Danica
9 months ago
I’m a bit confused about the options. I know DHCP snooping is for security, but I can't recall how it relates to VLANs in this scenario.
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Ceola
9 months ago
I practiced a similar question where we had to differentiate between VLAN types. I feel like "voice VLAN" is definitely the feature we need here.
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Virgina
9 months ago
I'm not entirely sure, but I remember something about native VLANs being related to untagged traffic. Could that be the right choice?
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Laurene
9 months ago
I think the answer might be "voice VLAN" since it allows the switch to handle both tagged and untagged traffic.
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Son
9 months ago
I'm leaning towards the native VLAN answer. It seems like the most straightforward way to handle both types of traffic on the same interface.
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In
9 months ago
The voice VLAN option seems like it could be relevant since we're dealing with an IP phone, but I'm not sure if that's the complete solution.
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Weldon
9 months ago
I think the native VLAN feature is the key here. It allows the interface to handle both tagged and untagged traffic.
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Shayne
9 months ago
Hmm, I'm a bit confused. I was thinking DHCP snooping might be the answer, but I'm not sure how that would work in this case.
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Junita
10 months ago
SPAN with Packet Brokers sounds like the way to go. It allows you to capture traffic locally, which is important for getting an accurate picture of what's happening in production.
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Helaine
1 year ago
Nicely done! But I'm still waiting for the humorous comments. How about: 'Looks like the IP phone is trying to phone home, but the computer is just phoning it in.'
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Xochitl
1 year ago
D) voice VLAN for sure! Although I'm tempted to choose C) MAC limiting just to see if anyone falls for that one.
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Hubert
1 year ago
D) voice VLAN for sure! Although I'm tempted to choose C) MAC limiting just to see if anyone falls for that one.
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Cory
1 year ago
D) voice VLAN
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Valentine
1 year ago
A) native VLAN
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Rolland
1 year ago
I'm torn between B) DHCP snooping and D) voice VLAN. But I think voice VLAN is the better choice since it's specifically designed for handling IP phone traffic.
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Tricia
1 year ago
I was going to say A) native VLAN, but then I remembered that's for handling untagged traffic, not tagged traffic from the IP phone.
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Allene
1 year ago
That makes sense, thanks for the clarification.
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Olive
1 year ago
D) voice VLAN is the feature that enables the interface to receive both types of traffic.
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Laurel
1 year ago
A) native VLAN is for untagged traffic, not tagged traffic from the IP phone.
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Ashlyn
1 year ago
The answer is clearly D) voice VLAN. It allows the interface to handle both untagged traffic from the computer and tagged traffic from the IP phone.
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Twila
1 year ago
D) voice VLAN
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Marsha
1 year ago
C) MAC limiting
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Rose
1 year ago
B) DHCP snooping
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Leonard
1 year ago
A) native VLAN
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Dorthy
1 year ago
I'm not sure, but I think native VLAN could also work in this scenario.
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Lai
1 year ago
I agree with Aleta. Voice VLAN allows the interface to receive both types of traffic.
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Aleta
1 year ago
I think the answer is D) voice VLAN.
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