After the /etc/tunables/nextboot file has been edited, which command can be used to validate changes to the IO performance tuning settings?（） ioo -v nextboot。 ioo -c nextboot。 valcheck -f nextboot。 tuncheck -r -f nextboot。
Which of the following files should be edited so that tftpd is running with the -n option？（） etc/services。 /etc/inetd.conf。 /etc/tftpd.conf。 /etc/rc.net。
自阀手柄在紧急制动位时，总风经主阀供气阀口、常用限压阀、紧急限压阀向（）充气。 工作风缸。 降压风缸。 作用风缸。 均衡风缸。
A customer has 6.5 TB with 146 GB 15k disk drives on an IBM System Storage DS8700. They want to add 15 TB using 300 GB 15k disk drives. The customer is concerned about performance and wants to know if the DS8700 has the performance capability. What is the appropriate way to model the performance（） Disk Magic。 Capacity Magic。 test the workload at an IBM Benchmark Center。 test the solution with IBM Storage Performance Center。
在使用坡口机时，要使（）同心。 管子与管子。 管子与砂轮。 管子与坡口机。 砂轮与坡口机。
A number of applications issue the following SQL statement:SELECT d.deptno, e.empno, e.salary FROM department d INNER JOIN employee e ON d.deptno = e.deptnoA database administrator wishes to store this query within the database. Which of the following database objects can be used to accomplish this?（）
