单项选择题
A. Install memory modules in pairs.
B. Insure the proper drivers are installed for best performance.
C. Apply thermal grease to insure proper seating.
D. Wear an anti-static wrist strap.
单项选择题 A laptop will not output to a connected projector. Which of the following steps should a technician take FIRST?（）
单项选择题 Which of the following network cable types is MOST often used in environments where physicalsecurity of the data is the top priority?（）
单项选择题 Which of the following is correct about differences in CAT5 and CAT6 connectors?（）