单项选择题
Which of the following BEST describes a hub?（）
A. Determines the best route to transmit data
B. Inspects traffic and accepts or declines transmission
C. Broadcasts data to specific network devices
D. Broadcasts data to all network devices
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Which of the following protocols encrypt communication?（）
A.HTTPS
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Which of the following protocols would BEST grant the user secure access to a remote location?（）
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