Free Huawei H12-931-ENU Practice Test & Real Exam Questions, Page 1

Question #1

The following steps add pointers

A. VC-3 to TU-3 process

B. TUG2 to TUG3 process

C. C-12 to VC-12 process

D. TUG3 to VC4 process

Discussion 0

Correct Answer: A Vote an answer

Question #2

For 10G and coherent 100G mixed transmission systems, the following description is correct

A. The OSNR threshold of the 100G single board is basically the same as that of 10G, so the configuration of the amplifier board can be configured according to the 10G standard.

B. Commissioning requires commissioning in accordance with 100G commissioning requirements, that is, non-standard incoming fiber optical power commissioning method

C. For 100G single wave, since the dispersion tolerance is very large, the dispersion compensation can be compensated according to the compensation principle of 10G

D. It is recommended to use long wavelength for 10G channel and short wavelength for 100G channel

Discussion 0

Correct Answer: C Vote an answer

Question #3

A path is a transmission entity, which is connected by a pair of "one-way paths" that can simultaneously transmit information in opposite directions between their respective outputs and inputs.

A. TRUE

B. FALSE

Discussion 0

Correct Answer: A Vote an answer

Question #4

The following is wrong about the position of the dispersion module in the signal flow.

A. If there is only one OBU board, the DCM is placed after the OBU

B. The OTM station usually pre-fills 20KM DCM before sending OBU

C. If there are two OBU boards, the DCM is placed between the two OBUs

D. If there is an OAU board, DCM is placed between OAU's TDC/RDC

Discussion 0

Correct Answer: A Vote an answer

Question #5

How many bytes more the packet of the Layer 2 MPLS label is than the original IP packet?

A. 2

B. 4

C. 16

D. 8

Discussion 0

Correct Answer: D Vote an answer

Question #6

Commonly used methods to improve the utilization of network resources are (multiple choice)

A. Add a dot on the ring

B. Change the protection method, such as changing SNCP to MSP

C. Change the protection method, such as changing MSP to SNCP

D. Remove the MSP ring into a smaller ring

Discussion 0

Correct Answer: B,D Vote an answer

Question #7

What should I pay attention to when swapping antennas? (multiple choices)

A. During the commissioning period, the weather conditions are good, and there is no rain/snow/fog impact between the two sites

B. Turn on AM function

C. If the microwave link adopts a 1+1 protection configuration and uses one antenna, turn off the power of the backup ODU before switching the antenna

D. ATPC function is off

Discussion 0

Correct Answer: A,C,D Vote an answer

Question #8

For ODUk ring network protection, the following statement is wrong:

A. Only working channel services need to be manually configured, and all protection channels are automatically generated

B. The node where the management point is located can have no business binding

C. Only one node needs to be configured as a management point in the entire ring

D. For each business, it is bound by the segment ID to achieve the only difference in business

Discussion 0

Correct Answer: B Vote an answer

Question #9

A network element cannot join the smart domain after the smart feature is enabled. The possible reasons are: (multiple choice)

A. The smart domain is not refreshed;

B. The network element data is not uploaded;

C. N board DCC management RES_ODU channel status is not enabled;

D. ODU1_PM_AIS exists on the N board;

E. The electrical layer DCC is not surging;

Discussion 0

Correct Answer: A,B,C,E Vote an answer

Question #10

Which of the following are the background reasons for the introduction of coherent communication ()? (multiple choice)

A. The conventional 40G DQPSK PMD is only 6~8ps. After the rate is upgraded to 100G, the PMD tolerance will be reduced by more than half, and it cannot support long-distance non-relay transmission.

B. For incoherent signals with a 40G data rate, a TDC module needs to be added to the receiving end, which has a slow response speed and does not support 1+1 protection scenarios, etc.

C. The biggest technical difficulty of coherence lies in high-performance FEC coding, and high-performance FEC coding is available in 2011

D. When the baud rate is increased to 100Gbaud/s, the spectral width of the BPSK/DPSK pattern has exceeded 50GHz, and 50GHz interval transmission cannot be achieved

Discussion 0

Correct Answer: A,B,D Vote an answer

Question #11

What are the limiting factors of CES ACR synchronization? (multiple choice)

A. Route switching of PSN network

B. Packet loss in PSN network

C. PSN network topology changes, network traffic load changes

D. Delay change of PSN network

Discussion 0

Correct Answer: A,B,C,D Vote an answer

Question #12

Before configuring SOM, the physical fiber connection from OMCA to the optical amplifier board must be completed, and the logical connection fiber from OMCA to the optical amplifier board does not affect the OMS path generation, so it does not affect the configuration of SOM.

A. TRUE

B. FALSE

Discussion 0

Correct Answer: B Vote an answer

Question #13

Regarding the OSNR test of the OTN system, which of the following statements is correct? () (multiple choice)

A. The 40G and 100G wavelengths overlap due to the signal spectrum, and the OSNR value tested by the traditional OSA test method is low

B. OptiX OSN8800/6800 equipment MCA online test 100G wavelength OSNR also uses the shutdown method

C. After the wavelength signal passes through a filter device such as D40, the noise power between channels will be reduced, so the OSNR value of the traditional OSA test is higher

D. When using OSA to test OSNR, because the noise in the signal band cannot be directly tested, the out-of-band noise interpolation method is adopted to calculate the noise in the band

E. The out-of-band noise interpolation method refers to inserting the noise of the instrument to replace the actual noise of the system

F. The integral method test OSNR is also called the turn-off method, and the channel business will be interrupted during the test. And in the case of a small number of waves, the OSNR value measured by the integral method has a certain deviation from the true value

Discussion 0

Correct Answer: A,C,D,F Vote an answer

Question #14

The test frame is a data message used to test the network connection status of the Ethernet service. Regarding the application of the OTN equipment test frame, which of the following statements is correct? () (multiple choice)

A. When the tributary board is configured to be electrically crossed to the wavelength division side of the optical wavelength conversion board that supports the test frame, the GFP management frame is processed by the optical wavelength conversion board. Therefore, in this case, the tributary board cannot send and receive test frames

B. For 40GE/100GE services, test frame messages are sent directly at the MAC layer. There are three counters for test frames, which are used to count sending test frames, answering test frames, and receiving test frames.

C. For GE/FE/10GE LAN services, the GFP management frame is used to send test frame messages. The test frame has two counters, which are used to count the sent and received test frames.

D. For the optical wavelength conversion board with the transceiver integrated, the test frame has nothing to do with whether the board is configured with electrical crossover.

E. When the client side accesses 10GE LAN services, "Port Service Mapping Path" needs to be set to "MAC Transparent Mapping (10.7G)" to support the test frame function

Discussion 0

Correct Answer: A,B,C,D,E Vote an answer

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