单项选择题
A. Run a wireless site survey
B. Speak to tenants to determine their telephone standards.
C. Install and configure a Gigabit switch.
D. Determine the operating system versions.
单项选择题 An administrator needs to terminate network cables that have just been installed in the main communications closet. Which of the following tools is required?（）
单项选择题 A user receives a call from someone reporting to be from the help desk who asks for their password. The user discovers later that the caller did not work for the help desk. Which of the following describes this type of exploit?（）
单项选择题 Which of the following networks are reserved for private IP addresses?（）