单项选择题

A technician finished installing antivirus software. Which of the following should the technician perform NEXT?（）

A. Run a full scan on the local disk.
B. Remove infected files.
C. Update antivirus signatures.
D. Quarantine infected files

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单项选择题
The Device Manager in Windows XP shows that an incompatible device driver is installed. Which of the following BEST describes the icon that is displaying next to that device?（）

A. Yellow question mark next to device
B. Black checkmark next to device
C. Yellow exclamation point next to device
D. Red X next to the device
单项选择题
A client is having trouble connecting to the Internet. The client is using a static IP address and is able to connect to other devices on the network via IP address only. Which of the following is MOST likely the problem?（）

A.IMAP
B.DHCP
C.DNS
D.NAT
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