单项选择题

Which test checks the transmitter and receiver of a local modem？（）

A.data parity
B.analog loop back
C.local digital loop back
D.remote digital loop back

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热门试题

单项选择题Acomputerbootsupwiththeerror CMOSChecksumFailure. Whichofthefollowingcomponentsneedstobereplaced？（）

A.power supply
B.CMOS chip
C.motherboard
D.CMOS battery

单项选择题AnA+CertifiedTechnicianMUSTdoaninstallonaWindowsXPsystemfromthedistributionCD.However，thesystemdoesnotbootfromthisCD.WhatistheMOSTlikelycauseofthisproblem？（）

A.The CD is defective.
B.The CD is not bootable.
C.The CD-ROM drive is defective.
D.The Boot Sequence is not set in the BIOS to boot first from the CD