Which of the following commands should be used to obtain information about the installed software？（）

A、 smit system

B、 smit installp

C、 smit licenses

D、 smit list_software

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  A、1个非主属性和2个主属性

  B、2个非主属性和1个主属性

  C、0个非主属性和3个主属性

  D、3个非主属性和0个主属性

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• Which tool is based on the AIX trace facility？（）

  A、 no

  B、 netpmon

  C、 entstat

  D、 nfso

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• Your database supports a DSS workload that involves the execution of complex queries: Currently, the library cache contains the ideal workload for analysis. You want to analyze some of the queries for an application that are cached in the library cache. What must you do to receive recommendations about the efficient use of indexes and materialized views to improve query performance?（）

  A、Create a SQL Tuning Set (STS) that contains the queries cached in the library cache and run the SQL Tuning Advisor (STA) on the workload captured in the STS.

  B、Run the Automatic Workload Repository Monitor (ADDM).

  C、Create an STS that contains the queries cached in the library cache and run the SQL Performance Analyzer (SPA) on the workload captured in the STS.

  D、Create an STS that contains the queries cached in the library cache and run the SQL Access Advisor on the workload captured in the STS.

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• Which of the following commands should be used to set network attributes on a currently running kernel？（）

  A、 no

  B、 chdev

  C、 vmtune

  D、 schedtune

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• 何谓脱机I/O和联机I/O？

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