Auser,Jill,isreportinghermouseismovingwhenJillisnotmovingit,andthecomputerisrunningslowerthannormal.WhichofthefollowingistheFIRSTactionthatKaren,atechnician,shouldtake?()
A. Runchkdsk.
B. Runanantivirusprogram.
C. Replacethefaultymouse.
D. Removeanyrecentlyaddedhardware.
统计数据的关联性是指()。
A. 最低的抽样误差
B. 最小的非抽样误差
C. 满足用户需求
D. 保持时间序列的可比性
Acustomerreportsthaterrormessagesoccasionallyappearandquicklydisappear.WhichofthefollowingistheBESTplaceforatechniciantobegintroubleshootingthisissue?()
A. RunaSystemRestore
B. CheckDeviceManager
ChecktheEventLogs
D. ChecktheSystemInformation
Which command is a valid way to view the status of an interface?()
A. >show interfaces fe-0/0/0 extensive
B. >show interfaces fe-0/0/0 status
C. >show interfaces fe-0/0/0 health-info
D. >show interfaces fe-0/0/0 verbose