← Back to exam page

4A0-255 – Nokia Advanced Optical Network Design

Loading demo links...

Showing 1–3 of 5 questions

Question 1

Suppose that for a given number of buffer credits and for an given average FC frame size, the maximum FC link length is 50 km.

If the average FC frame size is doubled, which of the following is correct?

Select an option, then click Submit answer.

  • ○

    The throughput is halved.

  • ○

    Throughput is doubled.

  • ○

    The Throughput is the same,.

  • ○

    The buffer credits need to be adjusted to achieve the maximum throughput.


Question 2

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

Select an option, then click Submit answer.

  • ○

    Rack size

  • ○

    Expected traffic added-dropped at the site

  • ○

    Mean time to repair for the equipment

  • ○

    Power supply


Question 3

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

Select an option, then click Submit answer.

  • ○

    OUT: B: ODU: C: OPU: D: OPU

  • ○

    OUT: B: ODU: C: OPU: D: OCH

  • ○

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

  • ○

    ODU: B: OYU: C: OPU: D: OPU