单项选择题
A. the customer standing right in front of them.
B. the customer who owes the company the most money.
C. the customer calling on the phone.
D. the customer they have an appointment with in an hour.
单项选择题 A military member has just returned to the United States from Europe and reports their personaldesktop computer does not work. Which of the following is the MOST logical solution to thisproblem?（）
单项选择题 Which of the following uses pair authentication to provide a wireless connection between twodevices?（）
单项选择题 Which of the following commands can be used to verify the gateway IP address on a localcomputer?（）