Nokia Exam 4A0-100 Topic 10 Question 80 Discussion

Actual exam question for Nokia's 4A0-100 exam

Question #: 80
Topic #: 10

[All 4A0-100 Questions]

Which of the following best describes the function of an ARP cache within the same subnet?

AUsed by IP to map an unknown IP address to the known hardware address of the distant host.

BAdds only an IP address entry for an unknown device on the same subnet.

CTransmits ICMP messages to multiple hosts with unknown IP addresses.

DResolves the MAC address of a host device given its IP address.

Show Suggested Answer

Suggested Answer: D

by Jenelle at Jan 28, 2024, 05:10 PM

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Reid

3 days ago

C? Really? ICMP messages? What does that have to do with ARP? Nah, I'm picking D and hoping the exam writers know what they're talking about.

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Marleen

13 days ago

I'm not sure about that. I think it adds only an IP address entry for an unknown device on the same subnet, so I would go with option B.

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Julene

14 days ago

I agree with you, Kina. That's why I would choose option D.

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Kina

16 days ago

I think the ARP cache resolves the MAC address of a host device given its IP address.

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Natalya

16 days ago

Hmm, B does sound a bit too specific. I mean, an ARP cache is going to have both IP and MAC addresses, not just IP. Gotta go with D on this one.

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Antonio

18 days ago

I'm not sure, but I think option A also makes sense as it maps an unknown IP address to a known hardware address.

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Derick

19 days ago

D seems like the obvious choice here. ARP is all about resolving MAC addresses from IP addresses, right? I can't imagine why anyone would think it's for ICMP messages or adding IP addresses.

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Nohemi

20 days ago

I agree with Daniel, option D seems to be the correct function of an ARP cache.

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Daniel

23 days ago

I think the ARP cache resolves the MAC address of a host given its IP address.

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