单项选择题
On a Windows network, users are reporting that they cannot access any network resources. The users
can ping the IP address and connect to the network resource using the IP address.
Which of the following is the cause of the problem?（）
A.The file server is offline.
B.The DNS server is not resolving correctly.
C.The DHCP server is not assigning correct IP addresses.
D.The domain controller is not responding.
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