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H31-311 Exam Dumps - HCIA-Transmission V2.0

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Question # 9

SES: There are 5% or more than 5% bit error blocks or at least one defect (OCI/AIS/LCKAAE/LTCA1M/PLM) within one second.

TRUE

FALSE

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Question # 10

When bit errors are detected in the B2 byte, which of the following alarms is reported by the peer end?

MS-AIS

RS-BBE

MS-FEBBE

MS-BBE

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Question # 11

Which of the following statements about overhead bytes is incorrect?

A1 and A2 are framing bytes. These bytes are used to separate STM-1 frames in a signal flow.

J0 is a regenerator section trace byte. This byte is used to repeatedly transmit a section access point identifier, so that the receive end can verify its continuous connection to the specified transmit end.

B1 is bit interleaved parity-8 (BIP-8). This byte is used to monitor bit errors at the regenerator section layer.

E1 and E2 are orderwire bytes. These bytes are used to provide a voice channel for orderwire connections.

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Question # 12

By default, the B2-EXC alarm is reported when the number of B2 bit errors exceeds the ( ) threshold.

0.000000001

0.00001

0.001

0.01

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Question # 13

Which of the following statements about the definition of SDH is correct?

A complete standard digital signal hierarchy that provides synchronous digital transmission, multiplexing, and cross-connection

A hierarchy of standardized digital signals that can be asynchronously multiplexed

A hierarchy of standardized digital signals that can be asynchronously cross-connected

A hierarchy that can be used for asynchronous digital transmission

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Question # 14

On the OSN series transport devices, Ethernet ports cannot access tagged frames and untagged frames at the same time,

TRUE

FALSE

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Question # 15

Which of the following maintenance signals is transmitted from a downstream site to an upstream site in OTN?

ATS

LCK

IAE

BDI

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Question # 16

Optical supervisory channels are intended for the supervisory of WDM optical transmission systems. In ITU-T recommendations, 1510 nm wavelengths at a ( ) rate are preferentially used.

64 kbit/s

192 kbit/s

2Mbit/s

576 kbit/s

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