單項(xiàng)選擇題

Which of the following servers resolves computer names to IP addresses?（）

A. Directory services
B. DNS
C. NTP
D. DHCP

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單項(xiàng)選擇題

Which of the following BEST describes the function of a redundant power supply?（）

A. Provides additional diagnostic LEDs
B. Reduces power consumption
C. Eliminates a single point of failure
D. Reduces total cost of ownership

單項(xiàng)選擇題

A group of users report that they can access local resources but cannot access the Internet. Which of the following should the administrator use to test connectivity?（）

A. tracert
B. msconfig
C. route
D. net use