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Huawei Certified Internetwork Expert-Transmission Sample Questions:
1. Synchronization means that signals maintain a certain strict specific relationship in frequency or phase, that is, their corresponding effective instants appear at the same average rate.
A) TRUE
B) FALSE
2. Four network elements A, B, C, and D form a two-fiber bidirectional multiplex section shared protection 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 services of A and B will not be affected, and the switching alarm will not disappear
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 business between A and B is not affected, and the switching alarm disappears
3. The networking of a certain wavelength division network is shown in the figure.
Now due to the needs of new business, there are 2 waves that need to be up and down at site B, that is, the OLA site needs to be transformed into a back-to-back OTM site. The error described below is
A) Since the original network dispersion is normal compensation, it is not necessary to adjust the dispersion after network transformation
B) Perform optical power budget for the new service hop, and redesign the power of the reconstructed site according to the requirements of the back-to-back OTM site. If possible, add an optical amplifier board.
C) Need to recalculate the design signal-to-noise ratio of each segment AB, BE, AE, and evaluate whether the designed signal-to-noise ratio can meet the needs of business reception
D) The site type is transformed from OLA to back-to-back OTM. It is necessary to add boards such as M40/D40/OA/OUT. It is necessary to evaluate whether the existing network subrack slots are sufficient. Subrack
4. During the equipment installation process, the following statement is wrong:
A) In order to dissipate heat, the empty slots on the network element can be used without filler panels
B) Inside the cabinet, the binding interval of optical fiber cable ties/optical fiber ties should not exceed 250mm, and the binding interval of user cable ties should not exceed 200mm
C) When plugging and unplugging a board with a connecting cable or pigtail on the panel, you should first unplug the connecting cable or pigtail before plugging and unplugging
D) Wear anti-static gloves or anti-static wrist straps before touching the equipment, holding boards, veneers, IC chips, etc.
5. The gain of the OAU board is 23db, and 1% of the total output power of the OAU board is used for MON detection. The output optical power of the tested MON port is 8dbm, then the input optical power of the IN port of the OAU board is
A) -11dbm
B) -15dbm
C) -21dbm
D) -13dbm
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: A | Question # 3 Answer: A | Question # 4 Answer: A | Question # 5 Answer: A |






