1.When pulling vertical backbone cable in a multi-story building (such as a five-floor structure), what method best reduces strain and cable damage? 1.在多层建筑（例如五层建筑）中敷设垂直主干电缆时，哪种方法最能减少应力和电缆损坏？

A. Pull the cable upward from the ground floor using a powered winch A. 使用电动绞盘从底层向上拉动电缆

B. Stage the full cable length on the top floor and pull downward B. 将整根电缆放在顶层，然后向下牵引

C. Station installers on every floor involved to manage tension and slack C. 在每一层都安排安装人员来控制张力和松弛度

D. Use only floor-level cable rollers and pull from one end with a single installer D. 仅使用楼层电缆滚轮，并由一名安装人员从一端拉动

2.If flexible conduit is substituted for rigid conduit during an installation, what sizing change is typically recommended? 2.如果在安装过程中用柔性导管代替刚性导管，通常建议进行哪些尺寸更改？

A. Use the same size as specified A. 使用指定的相同尺寸

B. Size down one size B. 尺寸减小一号

C. Size up one size C. 尺寸增大一号

D. Switch to a completely different conduit type D. 更换为完全不同的导管类型

3.When fastening a lag bolt into a metal server rack, what is the proper pilot hole size? 3.将方头螺栓固定到金属服务器机架上时，合适的导向孔尺寸是多少？

A. Slightly larger than the lag bolt diameter A. 略大于方头螺栓直径

B. Equal to the lag bolt diameter B. 等于方头螺栓直径

C. Slightly smaller than the lag bolt diameter C. 略小于方头螺栓直径

D. A pilot hole is unnecessary D. 不需要导向孔

4.Examine the diagram provided. What type of termination device is illustrated? 4.查看提供的图。图中所示的是哪种类型的端接设备？

A. RJ45 male plug A. RJ45 公插头

B. RJ45 keystone jack B. RJ45 模块化插座

C. Type F male connector C. F 型公连接器

D. Type F keystone jack D. F 型模块化插座

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