Auserstatesthatwhentheusercopiesfilesfrom‘MyDocuments’toanetworkshare,thefilesarenolongeravailablelocally.WhichofthefollowingBESTdescribesthereasonthefilesarenolongervisible?（）
A. Theusercopiedtoaread-onlyfoldershare.
B. Theuserchangedtheattributesofthefiles.
C. TheusercopiedthefilesfromthelocalMyDocumentsfolder.
D. Theusermovedinsteadofcopiedthefiles.
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证据的特征有（）
A. 客观性
B. 关联性
C. 合法性
D. 主观性
WhataretwoexamplesofREexceptiontraffic?（）
A. BGPupdatesthattravelthroughthelocalrouterandaredestinedforaremoterouter.
B. OSPFhellopacketsthataresentfromaremoterouterandaredestinedforthelocalrouter.
C. Telnettrafficthatissentfromaremotehostandisdestinedforthelocalrouter.
D. Telnettrafficthattravelsthroughthelocalrouterandisdestinedforaremoteendhost.
WhathappenswhenHostCheckerisconfiguredtoperformchecksevery"0"minutes?（）
A. HostCheckerisdisabled.
B. HostCheckerwillperformcontinouschecks.
C. HostCheckerwillperformcheckswhenuserlogsout.
D. HostCheckerwillperformcheckswhenuserfirstlogsin.
WhichofthefollowingtoolswouldbeBESTtousetopryopenthecaseofalaptop?（）
A. Metalscrewdriver
B. Plasticwedge
C. Needle-nosepliers
D. Extensionmagnet
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