Discuss ISC2 SSCP Exam Topic 7 Question 61

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).

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

Get Premium SSCP Questions as Interactive Web-Based Practice Test or PDF Real Exam Format Detailed Explanations Instant Access Get Your Practice Test

13 comments · newest first

Rikki 11 months ago

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

Lindsay 11 months ago

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

Barney 12 months ago

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

Mozell 12 months ago

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

Hyman 12 months ago

It's definitely ARP that does this!

Felicia 1 year 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.

Mel 1 year ago

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

Naomi 1 year ago

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

Helaine 1 year 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.

Thurman 1 year 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.

Pauline 1 year 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.

Toi 1 year 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?

Rene 1 year 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.

ISC2 SSCP Exam - Topic 7 Question 61 Discussion