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Nokia 4A0-112 Exam - Topic 3 Question 8 Discussion

Refer to the exhibit.All routers in the diagram are running a link-state routing protocol. Before the link failure, all routers have operational adjacencies with each other and there is a BFD session between routers R1 and R3. After the link failure, which of the following affects the routing protocol's convergence time?
B) The value of the routing protocol hello timers on routers R1 and R3.
A) The value of the Ethernet hello timers on the switches.
C) The value of the BFD transmit interval, receive interval and multiplier settings on routers R1 and R3.
D) The time taken by the switches to detect that the physical ports are down.

Nokia 4A0-112 Exam - Topic 3 Question 8 Discussion

Actual exam question for Nokia's 4A0-112 exam
Question #: 8
Topic #: 3
[All 4A0-112 Questions]

Refer to the exhibit.

All routers in the diagram are running a link-state routing protocol. Before the link failure, all routers have operational adjacencies with each other and there is a BFD session between routers R1 and R3. After the link failure, which of the following affects the routing protocol's convergence time?

Show Suggested Answer Hide Answer
Suggested Answer: B

The routing table manager (RTM) is responsible for selecting the best route when multiple routing protocols provide a route for the same destination prefix. It makes the decision on which route to add to the routing table based on the administrative distance, metric, and other criteria.


by Buffy at Mar 03, 2025, 02:11 AM

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Georgene
6 months ago
Totally agree with C, BFD is super important for fast recovery!
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Lenna
6 months ago
A doesn't really affect convergence time, right?
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Clare
7 months ago
Surprised that D isn't more impactful, but I guess it makes sense.
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Kirby
7 months ago
I think C is the key here, BFD settings matter a lot.
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Izetta
7 months ago
Definitely B, those hello timers are crucial!
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Marlon
7 months ago
I feel like the time taken by switches to detect the link failure could also play a role, but I’m not sure if it’s as significant as the BFD settings.
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Rebbecca
7 months ago
I'm leaning towards option C because BFD is supposed to help with faster failure detection, right? But I’m not 100% confident.
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Matthew
8 months ago
I remember practicing a question like this where the hello timers were mentioned, but I can't recall if they were the main factor in convergence.
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Laurene
8 months ago
I think the BFD settings could really impact convergence time, but I'm not entirely sure how they compare to the hello timers.
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Precious
8 months ago
I'm feeling pretty confident about this. The BFD settings on R1 and R3 will definitely have the biggest impact on how quickly the routing protocol converges after the link failure. The other choices are just distractions.
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Carmen
8 months ago
I'm a bit unsure about this one. I'll need to review my knowledge of BFD and how it interacts with link-state routing protocols. The other options don't seem quite right.
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Bobbye
8 months ago
The BFD settings on R1 and R3 seem like the most likely answer. The hello timers and switch port detection time don't seem as directly relevant to the routing protocol convergence.
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Tanja
8 months ago
Okay, let's see. The question is asking about what affects convergence time after a link failure. I think the BFD session between R1 and R3 is probably the key here.
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Glen
8 months ago
Hmm, this looks like a tricky one. I'll need to carefully consider the different factors that can affect routing protocol convergence time.
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Adela
1 year ago
Seriously, guys? You're all overthinking this. The correct answer is obviously C, because Cisco loves their fancy acronyms like BFD. *chuckles* Next question: How many routers can dance on the head of a pin?
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Hayley
11 months ago
I agree, let's go with C for this one.
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Latrice
11 months ago
Nah, I'm sticking with C. Cisco always has some trick up their sleeve with those acronyms.
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Vi
11 months ago
But what about the hello timers on the switches? Could that also affect convergence time?
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Catalina
12 months ago
I think you might be right, C does seem like the most logical choice.
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Jody
1 year ago
I'm gonna go with D, just to be different. Those switch detection times are always tricky, and the exam writers love to throw in a curveball like that. *winks* Gotta keep 'em on their toes, am I right?
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Mila
1 year ago
I'm with Emogene on this one. The BFD settings are the key factor here. Who cares about those silly Ethernet hello timers or the switch detection time? This is a routing protocol question, after all.
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Onita
12 months ago
Exactly, focusing on the BFD settings is essential for optimizing the routing protocol's convergence time.
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Xochitl
12 months ago
Yeah, the BFD transmit interval, receive interval, and multiplier settings play a crucial role in detecting link failures quickly.
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Tyra
12 months ago
I agree, the BFD settings on routers R1 and R3 will definitely affect the routing protocol's convergence time.
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Barney
1 year ago
Hmm, I'm not so sure. The BFD settings are important, but the time it takes the switches to detect the link failure could also play a big role. Gotta think this through carefully.
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Shenika
12 months ago
User 3: Both factors are important for routing protocol convergence. We need to consider them both.
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Hillary
1 year ago
User 2: I agree, but we shouldn't overlook the time it takes for the switches to detect the link failure.
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Wilburn
1 year ago
User 1: I think the BFD settings on routers R1 and R3 are crucial for convergence time.
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Emogene
1 year ago
C'mon, it's obviously C! Those BFD settings are crucial for fast convergence. I bet the exam writers are trying to trip us up with those other options.
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Ashanti
12 months ago
Definitely, the BFD settings are what really impact the routing protocol's convergence time.
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Madonna
1 year ago
Yeah, the transmit and receive intervals play a big role in detecting failures.
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Ressie
1 year ago
I agree, those BFD settings are key for quick convergence.
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Erinn
1 year ago
But what about the Ethernet hello timers on the switches? Don't they also impact convergence time?
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Louvenia
1 year ago
I agree with Berry. The BFD transmit and receive intervals play a crucial role in detecting link failures quickly.
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Berry
1 year ago
I think the BFD settings on routers R1 and R3 will affect the convergence time.
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