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4A0-255 PDF
Nokia 4A0-255 PDF

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Q1.

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?

q1_4A0-255

Answer: A
Q2.

Consider the exhibit showing the schematic for an NE in a deployed optical network. The traffic growth forecast is for the use of 40 channels in 3 years. The customer needs to reduce the space for the shelf. Among the following, which additional input is NOT necessary to meet these specific requirements?

q2_4A0-255

Answer: D
Q3.

Consider the exhibit that shows a network with a full mesh fiber structure. Link weights indicate the cost. Future services can be requested between any node pair.

Which of the following topology represents a minimum cost design (minimum overall fiber cost) where link failure survivability is ensured?

A)

q3_4A0-255

B)

q3_4A0-255

C)

q3_4A0-255

D)

q3_4A0-255

Answer: B
Q4.

Suppose there is a 40 Gbit/s signal which has a symbol rate of Gbaud/s. Which modulation format is being used?

Answer: C
Q5.

What is guardband required for?

Answer: D

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