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單項(xiàng)選擇題

An adapter state does not show available after a reboot. Which of the following is the most probable cause？（）

A.DNS is not working properly
B.Ping is not working properly
C.The cables are disconnected
D.The device driver did not load properly

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單項(xiàng)選擇題

A host is to be part of a very small private network， which will never be connected to any other networks. Which of the following name resolution schemes would be the easiest to implement？（）

A.DNS
B.NIS
C.DHCP
D.etc/hosts file

單項(xiàng)選擇題

The internet address 198.102.27.120 represents which of the following addresses？（）

A.Class A
B.Class B
C.Class C
D.Class D