多项选择题

When a computer does not recognize an internal modem， a technician should determine whether：（）

A.the modem is seated properly.
B.the number being dialed is valid.
C.there are resource conflicts.
D.there is power to the modem.
E.the modem speaker is enabled.

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热门试题

单项选择题Whichofthefollowingwillhelpprotectanoperatingsystemfromvulnerability？（）

A.Download free anti-virus programs from the Internet.
B.Perform updates from the manufacturers website regularly.
C.Using the operating systems email program only to open attachments.
D.Monitoring what is displayed on the screen.

单项选择题WhichofthefollowingRAIDconfigurationstakesadvantageofmirroring？（）

A.RAID 1
B.RAID 5
C.RAID 0
D.RAID 2

多项选择题Whichofthefollowingshouldbeconsideredwhenupgradingmemory？（）

A.speed of memory
B.memory slot color
C.type of memory
D.CPU speed
E.BIOS version

单项选择题Auserreportsthatwhentryingtoprintadocumentnothingcomesoutoftheprinterandstatesthattheonlyprinterintheprinterdialogboxis’MicrosoftOfficeDocumentImageWriter.’Thetechnicianshouldunderstandthattheproblemisthattheprinter：（）

A.has not been installed on the user’s computer.
B.is not turned on.
C.driver is corrupt.
D.cable is unplugged.

单项选择题Auserreportsthatthedisplayonthelaptopappearsblurred.WhichofthefollowingisMOSTlikelythecause？（）

A.The LCD is not running in its native resolution.
B.LCD monitors do not appear blurred.
C.The drivers are improperly installed.
D.More video memory needs to be allocated.