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Huawei Certified Internetwork Expert-Transmission Sample Questions:

1. Four network elements A, B, C, and D form an SNCP ring, and there are a large number of PDH services between A and B.
One day, the fiber between A and B was interrupted.
In order to eliminate the R-LOS alarm on the network management system, an engineer self-looped the optical ports at both ends of the interrupted fiber. After 10 minutes by default, what will happen?

A) The business between A and B is not affected, and the switching alarm disappears
B) The service between A and B is interrupted, and the switching alarm disappears
C) The service between A and B is interrupted, and the switching alarm does not disappear
D) The services of A and B will not be affected, and the switching alarm will not disappear

2. The upgrade from GACSA to UXCSB for OSN 3500 equipment is as follows:
1. Replace the spare cross-connect board
2. Switching between active and standby cross-connect boards
3. Replace the original main cross board
4. Data consistency check

A) 2134
B) 1234
C) 4321
D) 4231

3. The optical power of one wave is 3dBm, and the optical power of the other wave is 5dBm. The total optical power after the two waves are combined is 3+5 = 8dBm

A) TRUE
B) FALSE

4. PW APS bundling can reduce APS resource consumption and increase the speed of batch service switching.
Which of the following descriptions about PW APS bundling are correct? (multiple choice)

A) When the PW APS protection group is switched, its subsidiary protection pairs will not undergo the same switching.
B) When the status of the PW APS slave protection pair changes, it will cause the status of the PW APS protection group to change.
C) When the status of the PW APS slave protection pair changes, it will not cause the status of the PW APS protection group to change.
D) When the PW APS protection group is switched, its subsidiary protection pair also undergoes the same switching.

5. In a certain wavelength division system project, the 1st-20th wave LSX is configured, and the M40 output port is tested with a spectrum analyzer during commissioning. It is found that the optical power of the 20th wave is significantly lower than that of the other 19 waves. The possible reason is (multiple choice)

A) The RX port of the 20th wave LSX has an additional 5dB fixed light attenuation
B) The 20th wave LSX WDM side light emission is too small
C) The insertion loss of the 20th channel corresponding to M40 is too large
D) Wave 20 LSX wavelength shift

Solutions: