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單項(xiàng)選擇題

To examine the Exhibit， press the Exhibit button. The system administrator notices a system with routing cannot communicate with a system with an ip address 192.24.34.6. Using the information provided in the exhibit， what is the most likely reason？（）

A.The named is not running
B.The default gateway is not set
C.The NIS master server is down
D.Ipforwarding is not turned on

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