A. mv /old_dir/file /new_dir
B. mv -p /old_dir/file /new_dir
C. mv -k /old_dir/file /new_dir
D. mv /old_dir/file /new_dir/new_file
GivenaportionofavalidJavaEEwebapplication’sdirectorystructure：MyApp||--File1.html||--Directory1||--File2.html||--META-INF|--File3.htmlYouwanttoknowwhetherFile1.html，File2.html，and/orFile3.htmlwillbedirectlyaccessiblebyyourwebclient’sbrowsers.Whichstatementistrue？（）A.Allthreefilesaredirectlyaccessible.B.OnlyFile1.htmlisdirectlyaccessible.C.OnlyFile2.htmlisdirectlyaccessible.D.OnlyFile3.htmlisdirectlyaccessible.E.OnlyFile1.htmlandFile2.htmlaredirectlyaccessible.
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GivenaportionofavalidJavaEEwebapplication’sdirectorystructure：MyApp||--Directory1||--File1.html||--META-INF||--File2.html||--WEB-INF|--File3.htmlYouwanttoknowwhetherFile1.html，File2.html，and/orFile3.htmlisprotectedfromdirectaccessbyyourwebclient’sbrowsers.Whatstatementistrue？（）A.Allthreefilesaredirectlyaccessible.B.OnlyFile1.htmlisdirectlyaccessible.C.OnlyFile2.htmlisdirectlyaccessible.D.OnlyFile3.htmlisdirectlyaccessible.
GiventhatfileisareferencetoaFileobjectthatrepresentsadirectory,whichcodefragmentswillsucceedinobtainingalistoftheentriesinthedirectory?()A.Vectorfilelist=（（Directory）file）.getList（）；B.String[]filelist=file.directory（）；C.Enumerationfilelist=file.contents（）；D.String[]filelist=file.list（）；E.Vectorfilelist=（newDirectory（file））.files（）；
Whenperformingadatabaseduplication,whichduplicatedatabaseparameterwouldyousettoensurethattheonlineredologsarecreatedinthecorrectlocation?()A.log_file_name_convertB.convert_log_file_nameC.file_name_convert_logD.redo_log_file_name_convertE.logfile_convert_directory
InyourSupportcenter.cnproductiondatabase，youfindthatthedatabaseusersareabletocreateandreadfileswithunstructureddata，availableinanylocationonthehostmachinefromanapplication.Youwanttorestrictthedatabaseuserstoaccessfilesinaspecificlocationonthehostmachine.Whatcoulddotoachievethis？（）A.ModifythevaluefortheUTL_FILE_DIRparameterintheparameterfileB.GrantreadandwriteprivilegeontheoperatingsystempathtothedatabaseusersC.ModifythevaluefortheLDAP_DIRECTORY_ACCESSparameterintheparameterfileD.ModifythevalueforthePLSQL_NATIVE_LIBRARY_DIRparameterintheparameterfileE.Createadirectoryobjectreferringtotheoperatingsystempath，andgrantreadandwriteprivilegeonthedirectoryobjecttothedatabaseusers
InyourCertkiller.comproductiondatabase，youfindthatthedatabaseusersareabletocreateandreadfileswithunstructureddata，availableinanylocationonthehostmachinefromanapplication.Youwanttorestrictthedatabaseuserstoaccessfilesinaspecificlocationonthehostmachine.Whatcoulddotoachievethis？（）A.ModifythevaluefortheUTL_FILE_DIRparameterintheparameterfileB.GrantreadandwriteprivilegeontheoperatingsystempathtothedatabaseusersC.ModifythevaluefortheLDAP_DIRECTORY_ACCESSparameterintheparameterfileD.ModifythevalueforthePLSQL_NATIVE_LIBRARY_DIRparameterintheparameterfileE.Createadirectoryobjectreferringtotheoperatingsystempath，andgrantreadandwriteprivilegeonthedirectoryobjecttothedatabaseusers
The basic function of the file system is accessing files by names. The function can be realized by(24).A．directory-managingB．boosting the speed of the file-accessingC．file-protectingD．improving the utilization of storage
