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Nokia 4A0-255 Nokia Advanced Optical Network Design Exam Practice Test

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Total 40 questions
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Nokia Advanced Optical Network Design Questions and Answers

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Question 1

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

Options:

A.

QPSK

B.

BPSK

C.

4QAM

D.

DP-QPSK

Question 2

Which of the following statements about an alien wavelength at 10G is correct?

Options:

A.

It is an optical signal generated by FWM impairment.

B.

It has similar optical performance across multiple vendors equipment at 10G.

C.

It can be measured by a VAC card.

D.

It does not support Wavelengthtracker.

Question 3

Which if the following statements about Recovery Time Objective (RTO) and Recovery Point Object Point Objective (PRO) is FALSE?

Options:

A.

RTO/PRO define business continually requirements for data center.

B.

RTO/PRO defined the acceptable amount of data (in bits) that can be lost after a failure.

C.

Data center mirroring has the most critical level of RTO.RPO among DC applications.

D.

Tier ½ data centers have stricter RTO/PRO requirements than Tire ¾.

Question 4

Which of the following best describes Flexgrid?

Options:

A.

Flexgrid is based on flexible amplification stages

B.

Flexgrid uses flexible guardband that can take any spacing.

C.

Flexgrid is defined on a frequency grid spacing based on ,multiples of 12.5 GHz.

D.

Flexgrid allows channel bandwidth central frequencies and guardband to take any value in the spectrum range.

Question 5

Which of the following statement about guaranteed restriction (GR) in generalized Multiprotocol labelSwitching (GMPLS) is correct?

Options:

A.

GR use reestablished backup LSPs with resources reserved and configured.

B.

GR can achieve 100% survivability for a single-failure scenario only.

C.

GR does not required the signaling of the fault to trigger the restoration.

D.

GR calculates a new backup LSP every time a failure occurs.

Question 6

Which ofthe following statements about Raman amplification is FALSE?

Options:

A.

Amplification occurs along the fiber

B.

Chromatic dispersion within the fiber is increased.

C.

Flat gain can be achieved in any transmission band.

D.

OSNR is improved compared to EDFAs permitting lingers spans

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Total 40 questions
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