单项选择题

The CHKDSK /R command allows a technician to：（）

A.perform an exhaustive disk check， locate bad sectors， and recover readable information.
B.set a disk as read-only， perform an exhaustive disk check and repair bad sectors.
C.scan and verify the versions of all protected system files using the tools default operation.
D.consolidate fragmented files and folders on the computers hard disk.

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A.On the hardware tab in System Properties.
B.In the Security Center applet in Control Panel.
C.In Device Manager under the File menu and options.
D.In Computer Management.

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A.CMDCOMS
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C.COPYSOURCE
D.DUPREPARE

单项选择题Auserreportsthatthecomputerisrunningslowly.AfterrunningtheSFC，atechnicianobservesthatthedllcachefolderhasbecomecorrupted.Whichofthefollowingutilitiescanberuntorepairthecontentsofthedllcachedirectory？（）

A.FORMAT
B.SFC
C.HyperTerminal
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A.system /v
B.winnt /s
C.sfc /scannow
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A.CD
B.RD
C.MD
D.SD