单项选择题
A. Verity full system functionality
B. Identify the main problem and question the user
C. Document their findings, actions, and outcomes
D. Escalate the issue to upper management
单项选择题 When ordering switches for a new building, which of the following is the BEST way for the technician to determine the number of switches to put in each network closet?（）
单项选择题 A technician is using a packet sniffer to identify a server. The technician observes the following network traffic: Which of the following is MOST likely to be the server?（）
单项选择题 Which of the following would be used to optimize network performance and increase bandwidth availability?（）