单项选择题
Disks hdisk1 and hdisk2 are assigned to datavg. Which of the following commands should be used to determine which logical volumes are present on hdisk1？（）
A.lspv -l hdisk1
B.lsvg -l datavg
C.lslv -p hdisk1
D.lsattr -El hdisk1
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A.rsh
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Auserwiththeuseridof’joe’isunabletorshfromSYSTEMAtoSYSTEMBwithouthavingtoretypetheirpassword，buttheycanrshfromSYSTEMBtoSYSTEMA.Nootherusersareexperiencingthesameissue.Bothsystemshavea/home/joe/.rhostsfilethatcontaintheproperreferencestotheotherhost.The/home/joe/.rhostsfilesonbothSYSTEMAandSYSTEMBareownedbyuserid’joe’.Whichofthefollowingisthemostlikelycauseofthisproblem？（）
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AsystemadministratorwantstocoupletwoserverstogethersothatusersfromserverAcanaccessserverBwithoutenteringtheirpassword.Howwouldthisbeaccomplished？（）
A.employ NIS to synchronize user names and passwords
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