单选题An administrator gets a call that multiple users do not have network access to the company server that they have been using for five years. Users can access the other servers and computers in the building and check their home email accounts. The administrator tests the server’s Ethernet cable，verifies it works， and plugs it back into the NIC only to receive no status lights. Which of the following BEST indicates the problem？（）AThe DNS server is down.BThe NIC driver on the server is malfunctioning.CThe DHCP server is down.DThe server’s NIC is malfunctioning.
单选题
An administrator gets a call that multiple users do not have network access to the company server that they have been using for five years. Users can access the other servers and computers in the building and check their home email accounts. The administrator tests the server’s Ethernet cable，verifies it works， and plugs it back into the NIC only to receive no status lights. Which of the following BEST indicates the problem？（）
A
The DNS server is down.
B
The NIC driver on the server is malfunctioning.
C
The DHCP server is down.
D
The server’s NIC is malfunctioning.
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