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

• Question 1

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

  • GR use reestablished backup LSPs with resources reserved and configured.
  • GR can achieve 100% survivability for a single-failure scenario only.
  • GR does not required the signaling of the fault to trigger the restoration.
  • GR calculates a new backup LSP every time a failure occurs.

  Show Answer Answer: A Next

• Question 2

  Consider an OTN-based network controlled by GMPLS. Which of the following statements is correct?

  • An OCH LSP can be routed through an ODU LSP.
  • An ODU LSP can be routed through an OCH LSP.
  • An ODU LSP is routed between two photonic layer nodes.
  • The routing of the individual ODU frames is based on their label

  Show Answer Answer: D Next

• Question 3

  Which of the following statements about the Decision (HDEFC) decoding and soft decision FEC (SDFEC) decoding is FALSE?

  • HDFEC injects less latency into the decoding process than SDFEC.
  • HDFEC provides a higher coding gain than SDEFC
  • HDFEC uses fewer thresholds than SDEFC.
  • HDFEC discards bits earlier in the decoding process than SDEFC.

  Show Answer Answer: A Next

• Question 4

  Which of the following best describes Flexgrid?

  • Flexgrid is based on flexible amplification stages
  • Flexgrid uses flexible guardband that can take any spacing.
  • Flexgrid is defined on a frequency grid spacing based on ,multiples of 12.5 GHz.
  • Flexgrid allows channel bandwidth central frequencies and guardband to take any value in the spectrum range.

  Show Answer Answer: A Next

• Question 5

  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?

  • The throughput is halved.
  • Throughput is doubled.
  • The Throughput is the same,.
  • The buffer credits need to be adjusted to achieve the maximum throughput.

  Show Answer Answer: D Next