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Juniper Exam JN0-105 Topic 7 Question 8 Discussion

Actual exam question for Juniper's JN0-105 exam
Question #: 8
Topic #: 7
[All JN0-105 Questions]

Which protocol is responsible for learning an IPv4 neighbor's MAC address?

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Suggested Answer: A

The Address Resolution Protocol (ARP) is a fundamental protocol used in IPv4 networking to map an IP address to its corresponding MAC (Media Access Control) address. When an IPv4 device wants to communicate with another device on the same local network, it uses ARP to find out the MAC address associated with the target device's IP address. This ensures that IP packets can be encapsulated into Ethernet frames and delivered to the correct hardware address on the local network segment. ARP does not apply to IPv6, where Neighbor Discovery Protocol (NDP) performs a similar function.


by Mona at Apr 14, 2024, 04:19 AM

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Starr
6 months ago
I believe Santos and Winfred are correct. ARP is definitely the right answer.
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Denise
6 months ago
I'm not sure, but I think it might be D) Neighbor Discovery Protocol (NDP).
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Winfred
6 months ago
I agree with Santos. ARP is used to retrieve MAC address from IP address.
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Santos
6 months ago
I think the answer is A) Address Resolution Protocol (ARP).
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Tabetha
6 months ago
I remember studying that ARP maps IP addresses to MAC addresses, so I think it's the correct answer
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Sherrell
6 months ago
I think NDP is more for IPv6, while ARP is specifically for IPv4
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Britt
6 months ago
But what about D) Neighbor Discovery Protocol (NDP)? Isn't that also used for similar purpose?
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Maia
7 months ago
I agree with ARP is responsible for learning MAC addresses
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Sherrell
7 months ago
I think the answer is A) Address Resolution Protocol (ARP)
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Talia
8 months ago
NAT? No way, that's got nothing to do with MAC addresses. This is clearly an ARP or NDP question.
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Anjelica
8 months ago
Hmm, I'm not so sure. Isn't NAT the one that translates IP addresses? I feel like that might be related to this question somehow.
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Erick
6 months ago
I always get ARP and NAT confused, but ARP is definitely the one for finding MAC addresses.
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Shawnta
6 months ago
Yes, ARP is correct. It's used to map an IPv4 address to a MAC address.
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Cecily
6 months ago
A) Address Resolution Protocol (ARP)
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Ettie
8 months ago
Oh yeah, you're right! I think it's called Neighbor Discovery Protocol, or NDP. That's the IPv6 version of ARP.
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Marshall
8 months ago
ARP? Really? I thought that was just for IPv4. Isn't there a different protocol for IPv6?
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Glendora
8 months ago
Come on, this is easy! It's got to be ARP. That's the one that resolves MAC addresses, right?
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Aleshia
8 months ago
Ugh, I hate questions about protocols! It's like they're trying to see how many random acronyms we can memorize.
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