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Huawei H12-931-ENU Exam Syllabus Topics:

Huawei Certified Internetwork Expert-Transmission Sample Questions:

1. The following clock networking optimizations are wrong:

A) Timing reference clock transmission link, requires that at most N=20 network elements, the transit office clock must be introduced for clock reshaping and regeneration (high-quality clocks are serialized), up to K=10 transit office clocks, clocks The maximum number of G.813 clocks on the link does not exceed 60.
B) Under the non-SSM switching protocol, the clock network can only be configured as one-way and cannot form a loop.
C) For PDH, ITU-T stipulates that 4 consecutive odd frames sa4~sa8 in 2M bit signal TS0 are used to transmit quality information, and SDH uses S1 byte b5-b8 to transmit the same quality information. SDH equipment can automatically extract SSM information from the 2Mhz external clock signal provided by the BITS equipment, so as to know the quality level of the timing signal.
D) Under the standard SSM switching protocol, the clock can be configured as bidirectional, but it must not be configured as a ring. Enable the extended SSM protocol to solve the clock loop problem by assigning a clock ID to the clock source.

2. When relocating the OLA site (10G system), which of the following descriptions are wrong

A) The relocation distance has changed, and the optical power of the line needs to be reassessed
B) The relocation distance has changed, and the system dispersion needs to be re-evaluated
C) There is no need to adjust the optical power of upstream and downstream sites in the network management during the relocation process
D) The relocation distance has changed and the system signal-to-noise ratio needs to be reassessed

3. In ODUk SNCP protection, for circuit board or line fiber failure, each fault detection point at the receiving end reports the event, and the cross-connect board controls the selective reception to complete the switching action.

A) TRUE
B) FALSE

4. When Huawei OTN and ZTE OTN equipment are connected, the ODU0 and ODU1 time slots of Huawei OTN equipment use sequential mode. Which statement is correct below (multiple choice)

A) The sequence of ODU1 is the same
B) The order of ODU1 is different
C) The order of ODU0 is the same
D) The order of ODU0 is different

5. In order to achieve the specified synchronization quality requirements, corresponding requirements must be made for the synchronization transmission network, and certain networking rules must be followed during network planning. Which of the following is wrong?

A) The number of transfer office clocks cannot exceed 10
B) In a clock transmission direction, the number of sites separated by the clocks of the transit office cannot exceed 30
C) The total number of devices in one direction cannot exceed 60

Solutions: