单项选择题

Which of the following commands should be used to clear all entries from the error log? （）

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

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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.