Nokia 4A0-255 Exam Questions Instant Access

Question 1

Consider the exhibit that shows a network design in EPT.

Seven segments are defined segment lengths are shown in the list below the network map.

3 services are defined each service carries a 10G signal, is protected by diverse path and is router by shorted distance.

Which of the following links is the heavily loaded?

ASite A - Site B

BSite C -- Site D

CSite E - Site F

DAll three links have the same load

Answer : D

Question 2

Which of the following statements about GMPLS features is FALSE?

AGMPLS is able to manage the optical network through the DCN.

BGMPLS is able to control OTN networks.

CGMPLS is able to compute the routing of the optical channels.

DGMPLS is able to automatically provision the optical channels.

Answer : C

Question 3

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

AIt is an optical signal generated by FWM impairment.

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

CIt can be measured by a VAC card.

DIt does not support Wavelength tracker.

Answer : B

Question 4

Which of the following best describes Four Wave Mixing (FWM)?

AFWM is a linear impairment that produces crosstalk four adjacent wavelengths are used.

BFWM is a non-linear impairment that produces crosstalk at the sum and difference of two wavelengths.

CFWM is a non-linear impairment resulting from varying velocities at different frequencies.

DFWM is a linear impairment resulting from pulses broadening over ultra-long distances

Answer : A

Question 5

Which of the following best describes Flexgrid?

AFlexgrid is based on flexible amplification stages

BFlexgrid uses flexible guardband that can take any spacing.

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

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

Answer : A

Question 6

Consider the exhibit that shows the OTN frame structure . Which of the following sets of label is correct?

AOUT: B: ODU: C: OPU: D: OPU

BOUT: B: ODU: C: OPU: D: OCH

COPU: B: OTU: C: ODU: D: OPU

DODU: B: OYU: C: OPU: D: OPU

Answer : C

Question 7

Which of the following is NOT a functionality provided by a coherent receiver?

AAnalog-to-digital conversion (ADC)

BDigital signal processing (DSP)

CMixing

DDemultiplexing

Answer : C

Nokia Advanced Optical Network Design 4A0-255 Exam Questions