单项选择题 Whichofthefollowingproblemshasoccurredwhenamessageappearsonthesystemconsoleindicatingthatadumpmustbecopiedtoexternalmedia?（）

单项选择题 Acustomerindicatesthatasystemisexperiencingprintingproblems.Aftercheckingthesystem,andsuccessfullyprinting,noproblemhasbeenfound.Whichofthefollowingproceduresshouldbeperformednexttofurtherclarifytheproblem?（）

单项选择题 Whenausertriestologintothesystem,thefollowingerroroccurs:"3004-004.Youmust"exec"loginfromthelowestloginShell".Whichofthefollowingproceduresshouldbeperformednexttodeterminethecauseoftheproblem?（）