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單項(xiàng)選擇題

A network printer will not print. The printer is online and visible. All the print jobs complete but the printer will not operate. Which of the following is the MOST likely cause?（）

A. The drum is faulty.
B. The print buffer is full.
C. The printer is out of toner.
D. The fuser is faulty.

單項(xiàng)選擇題

The local library has several public desktops and is concerned about PCs being opened andcomponents being stolen. Which of the following could prevent this?（）

A. Secure the PCs to the table with cable locks.
B. Install biometrics to track user access and identities.
C. Install real-time system resource monitoring software.
D. Use security screws to prevent the case from being opened.