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Nokia 4A0-255 Dumps

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Total 40 questions

Nokia Advanced Optical Network Design Questions and Answers

Question 1

Which of the following statements about GMPLS features is FALSE?

Options:

A.

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

B.

GMPLS is able to control OTN networks.

C.

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

D.

GMPLS is able to automatically provision the optical channels.

Question 2

Which of the following about the Optical channel Transport Unit (OUT0 in ONT network is correct?

Options:

A.

OUT refer to the section between two multiplexers passing through one or moreamplifiers.

B.

OUT refers to the section between two amplifiers.

C.

OUT enables the multiplexing of OCH connections.

D.

OUT enables FEC processing.

Question 3

Which of the following statements about Bit Error Rate (BER) is correct?

Options:

A.

BER is the ratio of redundant bits to correct bits.

B.

BER is measured at both the transmitted and receiving ends.

C.

BER can be measured beforeafter the FEC decoding.

D.

BER can be accurately measured in a short period of time , for any rate.

Question 4

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?

Options:

A.

The throughput is halved.

B.

Throughput is doubled.

C.

The Throughput is the same,.

D.

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

Question 5

Consider two EDFA amplifiers in cascade. Each EDFA has an average input signal power of 10 mW and an average noise power of 1 mW. What is the OSNR of the system at the receiver.

Options:

A.

20 dB

B.

10 dB

C.

7 dB

D.

5 bB

Question 6

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

Options:

A.

HDFEC injects less latency into the decoding process than SDFEC.

B.

HDFEC provides a higher coding gain than SDEFC

C.

HDFEC uses fewer thresholds than SDEFC.

D.

HDFEC discards bits earlier in the decoding process than SDEFC.

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Total 40 questions