ISC2 SSCP Exam - Topic 7 Question 61 Discussion

Actual exam question for ISC2's SSCP exam

Question #: 61
Topic #: 7

[All SSCP Questions]

Which of the following is used to find the Media Access Control address (MAC) that matches with a known Internet Protocol (IP) address?

AAddress Resolution Protocol (ARP).

BReverse Address Resolution Protocol (RARP).

CInternet Control Message protocol (ICMP).

DUser Datagram Protocol (UDP).

Show Suggested Answer

Suggested Answer: A

ARP is used to find the Media Access Control address (MAC) that matches with a known Internet Protocol (IP) address.

The Address Resolution Protocol (ARP) is a computer networking protocol for determining a network host's link layer or hardware address when only its Internet Layer (IP) or Network Layer address is known

Reverse Address Resolution Protocol (RARP) is used to find the IP address that matches an Ethernet address.

ICMP is a management protocol and messaging service provider for IP (e.g. PING).

UDP runs over IP. It is a best effort protocol that offers no reliability. UDS is used for application such as streaming media, voice over IP, the DNS protocol, as well as the Simple Network Management Protocol (SNMP).

Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 87.

also see:

http://en.wikipedia.org/wiki/Address_resolution_protocol

by Fannie at Oct 22, 2022, 05:58 PM

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Rikki

4 months ago

I disagree, I think ICMP plays a role here too.

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Lindsay

4 months ago

ARP is the go-to for IP to MAC resolution, no doubt!

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Barney

4 months ago

Wait, is ARP really the right answer? Seems too simple.

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Mozell

4 months ago

I thought it was RARP at first, but ARP is correct.

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Hyman

4 months ago

It's definitely ARP that does this!

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Felicia

5 months ago

I’m a bit confused about ICMP and UDP here. I know they’re important protocols, but I don’t think they relate to finding MAC addresses.

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Mel

5 months ago

I recall a question similar to this in our review sessions, and I think ARP was definitely the one we focused on.

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Naomi

5 months ago

I’m not entirely sure, but I feel like RARP might be the answer too. It’s the reverse process, right?

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Helaine

5 months ago

I think it's ARP that we use to find the MAC address from an IP. I remember practicing that in our networking labs.

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Thurman

5 months ago

I'm feeling a bit lost on this one. There are a lot of details to keep track of between the two privacy frameworks. I'll need to re-read the question carefully and try to identify the core difference.

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Pauline

5 months ago

I've got a strategy for this. I'll start by identifying the common nodes between the two hierarchies, then look for any nodes that are unique to one or the other.

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Toi

5 months ago

I'm really torn between B and C because I recall something about negotiations at the access layer, but wasn't there something about the phone's classification being accepted as well?

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Rene

5 months ago

Hmm, I'm a bit confused about the difference between proxy copies and image copies. I'll need to review that part of the material again before answering.

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