1. What is the main reason why the DC power line and signal line must be separated?

2. The appearance of the equipment is seriously damaged during the installation process, the project supervisor should apply for replacement of materials and be responsible for tracking the damage caused.

3. What is the optical network unit called for short?

4. When the hardware installer goes to the site, he can wear slippers and sandals to work.

5. The ODF fiber distribution frame does not need to be grounded.

6. In general, which terminal does the yellow-green cable access indicate?

7. The correct connection of the ground wire is an important guarantee for lightning protection and anti-interference of the equipment, and is an important measure to protect personal safety.

8. Wear an ESD-preventive wrist strap when you insert or remove a card into the cabinet.

9. What hazards may be caused by the pigtails outside the cabinet without the bellows protection? (Multiple Choice)

10. What should be done before the construction workers go to the station? (Multiple Choice)

11. It is strictly forbidden to look directly at the end of the fiber, the laser source, etc., and the laser source must not face itself or the eyes of others.

12. When using the mobile work platform, the wheels below must be locked. The operator above selects the rigid point to secure the safety device to avoid falling.

13. After the installation of the trunk cable and the user cable, what should be done in the next step?

14. If the device uses a blue and black power cable, which of the following terminals is the black cable connected to?

15. A lighter can be used for the heat shrinkable sleeve when the power cord connector is made indoors.

16. What is the “one” in “One-place Four-line” in the engineering installation scenario?

17. What kinds of methods are used for fiber forming and production? (Multiple Choice)

18. Gloves should be worn out of the box and the tools should be used correctly. The box that is sharp and easy to injure should be removed from the construction site as soon as possible.

19. The meaning of the grounding mark is that the equipment requires grounding. There is no difference between when the equipment is installed first or when it is grounded first.

20. When installing the device, all the power links and signal wires should be bundled together as much as possible for convenience.