单项选择题

A user is trying to connect a mobile IR printer to a mobile device with no success. Which of the following is the MOST important when printing to an IR printer?（）

A. Enough light
B. Line of sight
C. Correct printer drivers
D. Enough power

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单项选择题

The network printer is locking up and printing garbled text. When the user cancels the job fromtheir local print queue, nothing happens. Which of the following is the MOST likely cause?（）

A. The printer needs to be power cycled to clear the job.
B. The print server’s queue needs to be checked.
C. The printer needs to be set to factory defaults.
D. The user’s workstation needs to be rebooted.

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Which of the following ISP types requires an RJ-11 connection to the PC?（）

A.Cellular
B.Cable
C.Dial-up
D.WiMAX

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A company would like to create and maintain a web presence by operating a web server and anFTP server for users to upload and download job specifications. Which of the following Internetconnection types would be BEST suited for this type of traffic?（）

A. Satellite
B. Fiber
C. 4G mobile hotspot
D. DSL