What is precision Time Protocol (PTP) designed for?

APrecise time measurements

BSynchronization of encryption entities

CShortest path discovery

DPacket-based timing distribution

Answer : B

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?

AThe throughput is halved.

BThroughput is doubled.

CThe Throughput is the same,.

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

Answer : D

Which of the following is recommended to reduce the latency of a 30km long link?

ADCM-free amplifiers

BSoft-decision FEC

CLow-noise amplifiers

DL1 encryption

Answer : C

Which of the following can be detected through power monitoring with an Optical Time Domain Reflect meter?

AIntrusions on fibers

BPower injection one channel

CHacking of L1 encryption

DIntrusions in the cryptographic keys

Answer : B

Which of the following statements about the management plane data Communications Network (DCN) is correct?

AThe management plane DCN uses in-band communication.

BThe management plane DCN can be connected to each NEs via OSS/OBS interface.

CThe management plane DCN can be connected to each NEs directly.

DThe management plane DCN enables direct communication between the NEs.

Answer : C

Free Practice Questions for Nokia 4A0-255 Exam