单项选择题
A. CAT5 connectors have locking tabs
B. CAT5 and CAT6 use the same connectors
C. CAT6 supports three different wiring standards
D. CAT6 connectors are longer for better contact
单项选择题 Which of the following would a technician MOST likely consider to avoid electrical shock with adecommissioned CRT?（）
单项选择题 Which of the following wireless technologies is primarily setup for video/audio and the frequency is 5 GHz?（）
单项选择题 A user cannot undock a laptop from the docking station. Which of the following is the MOST likely cause?（）