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A series of actions are triggered on a router as a result of enabling both loopfree-alternate for a link-state routing protocol and ip-fast-reroute. Which of the following is NOT one of those actions?
Suggested Answer: A
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31 comments · newest first
KR
Kris
11 months ago
I thought they all sounded right, but A is the odd one out.
GR
Gretchen
11 months ago
B is what I thought too, but it makes sense.
EL
Ellsworth
11 months ago
Wait, are we sure about D? That sounds important.
SA
Samira
11 months ago
I agree, C seems off too.
RO
Royce
12 months ago
A is definitely not one of those actions.
PE
Penney
12 months ago
Enabling local repairs seems like a key feature, but I can't recall if it directly relates to the actions listed here.
RE
Rebecka
1 year ago
I practiced a similar question last week, and I feel like calculating the backup next hop is definitely part of the process.
FI
Fidelia
1 year ago
I think option C sounds familiar, like it might not be something that happens with ip-fast-reroute.
LE
Leota
1 year ago
I remember studying loop-free alternate, but I'm not entirely sure about the specific actions it triggers.
CE
Celia
1 year ago
I think the key here is to focus on the "NOT" part of the question. That means we need to identify the action that is not triggered by enabling those features. Option C seems the most likely candidate.
VI
Viva
1 year ago
I'm a bit unsure about this one. The options all seem plausible, but I'll need to review my understanding of how these features work to determine the right answer.
CR
Crissy
1 year ago
I'm pretty confident that the correct answer is A. Calculating the shortest-path next hop is a fundamental routing function, not something that would be triggered by those specific features.
LE
Leonora
1 year ago
Okay, let's see. I know that ip-fast-reroute is about providing fast local repair, so that's probably not the answer. The other options seem more related to the core functionality.
MY
Myong
1 year ago
Hmm, this is a tricky one. I'll need to think carefully about the actions triggered by enabling both loopfree-alternate and ip-fast-reroute.
FR
Francesco
2 years ago
I think the answer is B, because it doesn't involve installing entries in the FIB.
KR
Krystal
2 years ago
Wait, so they're asking us what's NOT done? That's like a double negative, right? My head hurts just thinking about it!
TR
Trinidad
2 years ago
This is a tricky one. I'm going to have to do some more research on IP-FRR before I can be confident in my answer.
JU
Judy
2 years ago
I think B is the correct answer. Calculating a backup next hop without informing other routers would be a security risk.
JO
Josephine
2 years ago
Actually, D is the correct answer. Enabling the router to locally repair the active path is a key feature of loopfree-alternate and ip-fast-reroute.
KR
Kristel
2 years ago
I believe C is the correct answer. Installing two entries in the FIB for IP prefixes makes sense for redundancy.
BR
Brendan
2 years ago
I agree, A seems like a standard procedure for routing protocols.
DE
Desmond
2 years ago
I think A is the correct answer. Calculating the shortest-path next hop is a common action.
MA
Marget
2 years ago
I'm not sure, but I think it might be A.
KI
King
2 years ago
D sounds like the obvious answer to me. Enabling local repair is a key feature of IP-FRR, not something that's not done.
CO
Colene
2 years ago
I disagree, I believe the answer is D.
NU
Nu
2 years ago
Hmm, I'm not sure about C. Isn't that a bit excessive to have two FIB entries per prefix?
NO
Noel
2 years ago
Yeah, having two FIB entries per prefix does seem excessive.
PA
Paris
2 years ago
D) Enabling the router to locally repair the active path to an IP prefix in case of failure.
ST
Stephanie
2 years ago
B) Calculating a backup next hop for each known IP prefix, if it exists, that would not create a routing loop if used without informing other routers.
GW
Gwenn
2 years ago
A) Calculating the shortest-path next hop for each known IP prefix.
GA
Gaynell
2 years ago
I think the answer is C.