Huawei H31-311_V2.5 Exam Practice Test Instant Access

Question 1

Which of the following is the functional unit that provides serial data for the interface and system associated with the orderwire phone?

ACross-connecting unit

BAuxiliary unit

CTributary units

DLine units

Answer : B

Question 2

Which of the following methods can be used to multiplex low-order ODUK to higher-order ODUk?

ATime-division multiplexing

BWavelength division multiplexing

CNull division multiplexing

DFrequency division multiplexing

Answer : A

Question 3

Which factors determine the optical signal-to-noise ratio (OSNR) of the receiving end to a certain extent After the signal transmission in the WOM system is transmitted over a certain distance, the "oSNR" of the receiving end of the optical signal-to-noise ratio is reduced to a certain extent. Which of the following is the main cause?

AUse EDFA. ).

BUse of multi-density multiplexers and multiplexers.

CDo not use new optical fibers.

DOptical fiber attenuation is too high.

Answer : A

Question 4

Which of the following statements about overhead bytes is incorrect?

AA1 and A2 are framed bytes' These bytes are used to separate STM-1 frames in the signal stream. .

BJ0 is the regenerator part trace byte. This byte is used to resynch the send segment access point identifier so that the receiving end can verify its continuous connection to the specified sender.

CB1 is better than holding interleaved parity 8 (BIP-8). This byte is used to monitor for bit errors in the regenerator section layer.

DE1 and E2 are wired bytes. These bytes are used to provide a voice channel for order line connections.

Answer : A

Question 5

The MAC loopback and PHY loopback are used for fault location. When the MAC loopback is set to in loop, the PHY loopback can be set according to the actual situation.

ATrue

BFalse

Answer : B

Question 6

Which of the following can be configured as the monitoring time for network element performance events?

ALater than the current time

BSame as the current time of NE

Cis earlier than the current time

DAnytime

Answer : A

Question 7

The last 256 columns in the OTN frame structure are the FEC regions for forward error correction.

ATrue

BError

Answer : A

Huawei H31-311_V2.5 HCIA-Transmission V2.5 Exam Practice Test