CompTIA认证考试PD0-001单项选择题每日一练(2019.01.21)

单项选择题
When is it advisable to dump the waste toner from a technicians service vacuum？（）
A.When it is full.
B.It is not recommended.
C.Before performing preventative maintenance.
D.After each call.
单项选择题
A customer has installed a new computer on their network. They can print to the printer but the option for duplex printing is not available. All other computers have the option. Which of the following is the cause of the problem？（）
A.The new computer is printing to the wrong IP address.
B.The new computer is using the wrong protocol.
C.The driver port is not setup correctly.
D.The option has not been selected on the driver.
单项选择题
How many CCDs are located in a single pass duplex ADF？（）
A.One
B.2
C.3
D.4
单项选择题
Which of the following types of media would MOST likely cause above normal amounts of machine jamming？（）
A.Envelopes
B.Colored media
C.Letterhead
D.Pre punched
单项选择题
The customer has a dedicated ink jet fax machine that is used to send and receive faxes only from the corporate office. The user complains of streaks on the received faxes while the internal self-prints are fine. Which of the following should a technician recommend？（）
A.Clean the scanner glass on the distant machine.
B.Clean the scanner glass on the local machine.
C.Clean the printer head on the local machine.
D.Call the telephone company to increase the line signal level.