220-701单项选择题每日一练(2019.01.10)

单项选择题
Which of the following is the IPv6 loopback address?（）
A.：：1
B.1.1.1.1
C.127.0.0.1
D.255.255.255.254
单项选择题
If a technician is getting frustrated during a support call, which of the following could the technician employ to avoid irritating the customer?（）
A. End the call quickly, even if a solution has not been found.
B. Ask the caller to call back in a while.
C. Put the caller on hold briefly and take a deep breath.
D. Pass the caller to another support representative.
单项选择题
Which of the following ports is used for HTTPS traffic by default?（）
A.80
B.143
C.443
D.8080
单项选择题
A bank wants to maximize the security of employee computer data displayed on their screen.Which of the following would BEST accomplish these goals?（）
A. Keyboard filters
B. Privacy filters
C. Screensavers
D. Secure display drivers
单项选择题
Which of the following is MOST likely a managed, Layer 3 device?（）
A.Router
B.Bridge
C.Hub
D.Switch