All of the following types of statistics are reported by the iostat command tool EXCEPT:（）.

单项选择题To examine the Exhibit, press the Exhibit button. Which option would produce this output from the errpt command? （）

A. errpt -t 
B. errpt -a 
C. errpt -D 
D. errpt

单项选择题AnSSAdiskthatispartofthemirroredvolumegroupneedstobereplaced.Whichofthefollowingproceduresshouldbeperformedbeforethediskisphysicallyabletobereplaced?（）

A.reducevg, rmdev, syncvg 
B.rmlvcopy, exportvg, rmdev 
C.rmlvcopy, reducevg, rmdev 
D.No action is required since SSA is a Hot Swap device and is mirrored

单项选择题Whichofthefollowingcommandsshouldbeusedtoclearallentriesfromtheerrorlog?（）

A. errpt -d S 0 
B. errclear 0 
C. errpt -d H 0 
D. errclear -d H 0 

单项选择题While a user is compiling a C program,  vmstat 120 10  is run to determine the cause of a performance problem.  Using the vmstat output as shown in the exhibit, which of the following conclusions is most appropriate to draw?（）

A. There is a file I/O bottleneck.
B. There are too many open files. 
C. There appears to be a buffer shortage. 
D. There is a paging space I/O bottleneck. 

单项选择题Whenplanningtoaccesstheon-linedocumentationfromaremoteclient,whichofthefollowingproceduresshouldbeperformedontheserver?（）

A.Install and configure the HTTPServer. 
B.Add the name(s) of the client(s) to the httplite.conf file. 
C.Add the names of any clients expecting to access the documentation to the /etc/hosts file. 
D.No action is required.