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Which of the following protocols does not operate at the data link layer (layer 2)?
Suggested Answer: D
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ICMP is the only of the mentioned protocols to operate at the network layer (layer 3). Other protocols operate at layer 2.
Source: WALLHOFF, John, CBK#2 Telecommunications and Network Security (CISSP Study Guide), April 2002 (page 1).
13 comments · newest first
DO
Doretha
11 months ago
L2F is also layer 2, so it's definitely ICMP here!
ME
Merrilee
12 months ago
RARP and PPP are definitely layer 2 protocols.
EL
Elizabeth
12 months ago
Wait, are we sure about that? I thought ICMP was more versatile.
GE
Geraldo
12 months ago
Totally agree, ICMP is for network layer!
GA
Gabriele
1 year ago
ICMP operates at layer 3, not layer 2.
GL
Glenn
1 year ago
I’m a bit confused because I thought L2F was related to layer 2 as well, but now I’m not so sure.
VI
Vivan
1 year ago
This question reminds me of a practice quiz where we had to identify layer protocols. I think ICMP was mentioned there too.
PI
Pilar
1 year ago
I remember studying that ICMP operates at the network layer, so I'm leaning towards that as the answer.
WE
Wenona
1 year ago
I think PPP, RARP, and L2F are all data link layer protocols, but I'm not completely sure about ICMP.
JE
Jeannetta
1 year ago
Hmm, I'm not totally sure about this one. The question is a bit vague and I'm not familiar with the details of GPU pass-through technology. I might need to do a quick review of that before answering.
LE
Levi
1 year ago
Okay, I've got this. The key here is that blockchain is a decentralized technology, so the answer has to be C - there is no central server, it's distributed across the network. Confident in that one!
JA
Jacqueline
1 year ago
Crowd-sourced testing (option D) could provide valuable real-world insights, but it might be harder to control and standardize the testing conditions. I'd consider that as a complementary approach, but I'd start with a simulator or emulator to get a baseline.
BE
Beatriz
1 year ago
I remember something about head banging being related to self-stimulatory behavior, but I'm not sure which option fits best.