You plan to use SQL Performance Analyzer to analyze the SQL workload. You created a SQL Tuning Set as a part of the workload capturing. What information is captured as part of this process?（） [" the SQL text SQL"," the execution plan"," the execution context"," the execution frequency"," the system change number (SCN)"]
In AIX 5L and later， the operating system supports the /proc filesystem. What would be the best description of the /proc filesystem？（） [" It is a pseudo filesystem that maps processes and kernel data structures to corresponding files."," It is a JFS mounted filesystem that provides an exact representation of what is happening to a proces at a single and discrete point of time."," It is a JFS mounted filesystem that maps processes and read-only files related to these processes."," It is a pseudo filesystem that contains data that represents the state of the parent processes （but not their threads） in a system."]
若当事人就价款约定不明协商不一致的，若是市场价，按（）确定。 ["A.订立时的市场价的最高价 ","B.订立时的市场价的平均价 ","C.订立时的市场价的最低价 ","D.再次协商"]
A network administrator provides an IP address of 128.135.0.142 and a subnet mask of 255.0.0.0. Once a ping is attempted， it fails. Which of the following options is the most probable cause of the failed ping？（） ["0 is not valid in an IP address","128 is a reserved network","The subnet mask should be 255.255.0.0. since it is a class B","A network problem has occurred since IP and subnet are valid"]
Which of the following commands should be used to identify packet sequence problems？（） [" ping and arp"," lsattr and ifconfig"," netstat and iostat"," iptrace and tcpdum"]
简述THE SWITCH变流器功率模块1U1、2U1、3U1用万用表检查模块管压降是否失效的方法。
