单项选择题

When analyzing disk I/O performance， which of the following metrics and/or statistics should be included in the study？（）

A. Disk size， stock availability， VHDCI
B. Disk size， distance， temperature， and compatibility
C. Disk fragmentation， MTBF， and maintenance
D. Disk configuration， throughput， transactions， queues， and latencies

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单项选择题

Which of the following commands can be used to commit applied filesets？（）

A. /usr/sbin/installp -C
B. /usr/sbin/inutoc -c
C. /usr/sbin/installp -c
D. /usr/sbin/lsresource -c

单项选择题

The bos.perf package is part of the base operating system. Performance Diagnostic tool， PDT， is a part of bos.perf. All of the following statements are true EXCEPT？（）

A. PDT attempts to identify performance problems automatically by collecting and integrating a wide range of performance， configuration and availability data.
B. PDT consists of three components， the collection component comprises a set of programs that periodically collect and record data， the retention component periodically reviews the collected data and discards data that is obsolete， and the reporting component periodically produces a diagnostic report from the current set of historical data.
C. PDT contains motif-based， AIX licensed programs that can easily access tools for system and network performance tuning， monitoring， and analysis.
D. PDT assesses the current state of a system and tracks changes in workload and performance. It attempts to identify incipient problems and suggest solutions before the problems become critical.

单项选择题

All of the following comprise the Performance Toolbox EXCEPT：（）

A. perfmgr
B. perfagent.server
C. perfagent.tools
D. perfagent.client