Nokia 4A0-255 Exam - Topic 10 Question 73 Discussion

Actual exam question for Nokia's 4A0-255 exam

Question #: 73
Topic #: 10

Refer to the exhibit that shows a demand matrix, a network topology with candidate links (in thick blue lines and dashed lines), the defined network in thick blue lines and the demand routing (colored numbers in the figure). Every link is 80 km long. Which of the following requirements is supported by this network design with the displayed demand routing?

A1+1 protection

BMinimum cost design

CMinimum latency

DResilience against two link faults

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Suggested Answer: A

by Millie at Jan 05, 2026, 05:16 AM

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Anna

3 days ago

A) 1+1 protection? Nah, this is clearly a minimum cost design. Those dashed lines are probably cheaper backup links.

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Ngoc

8 days ago

D) Resilience against two link faults. The network has multiple paths between nodes, so it can handle two link failures.

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Devora

14 days ago

C) Minimum latency, definitely. Look at those demand routes - they're taking the shortest paths!

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Scarlet

19 days ago

Minimum latency seems like a possibility, but I need to double-check how the routing impacts that in this specific setup.

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Gearldine

24 days ago

I'm leaning towards resilience against two link faults, but I can't quite recall how to analyze the topology for that.

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Zena

29 days ago

I think we practiced a similar question about minimum cost design, and I recall that it often depends on the demand matrix.

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Jimmie

1 month ago

I remember studying about 1+1 protection, but I'm not entirely sure if this network design supports it based on the routing shown.

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Sina

1 month ago

Okay, let me think this through step-by-step. The demand matrix shows the traffic requirements, and the network topology shows the available links. I'll need to analyze how the demand is routed and see which requirement that aligns with.

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Lamonica

1 month ago

I'm a bit confused by the different link types and the demand routing. I'll need to review the concepts of 1+1 protection, minimum cost design, minimum latency, and resilience against link faults to figure out which one is supported here.

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Carey

2 months ago

The network topology shows some redundant links, so that might suggest 1+1 protection or resilience against two link faults. But I'll need to double-check the details to be sure.

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Brendan

2 months ago

Okay, let me take a closer look at the exhibit. The demand routing seems to be spread out across multiple links, so that could indicate a minimum cost design. But I'm not sure if it meets the other requirements.

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Jutta

2 months ago

Hmm, this looks like a tricky one. I'll need to carefully analyze the demand matrix and network topology to determine which requirement is supported.

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