单项选择题
To examine the Exhibit， press the Exhibit button. 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 about the I/O bottleneck？（）
A. The bottleneck is network I/O. B. The bottleneck is local disk I/O. C. The bottleneck is paging space I/O. D. The bottleneck is to a remote filesystem.
单项选择题 WhichtoolisbasedontheAIXtracefacility？（）
单项选择题 Whichofthefollowingcommandsshouldbeusedtotuneparametersofdevicesthataredisplayedwithlsattr？（）
单项选择题 Whichofthefollowingcommandsshouldbeusedtoidentifypacketsequenceproblems？（）
