单项选择题
A. Multimeter
B. Temperature monitor
C. Cable tester
D. Toner probe
单项选择题 After testing a new 100BaseTX cable, the technician determines that only pairs 4, 5, 7, and 8 are straight-thru wires. Which of the following MOST likely describes this cable type?（）
单项选择题 Which of the following is typically used In an LAN environment?（）
单项选择题 Which of the following tools are BEST used to cut away the outside covering of a CAT5e cable?（）