An administrator is ordering a new Power 550. They will mirror rootvg and are concerned about single points of failure. Which of the following features should be ordered（） Dual I/O planar， dual disk drives， dual SCSI adapters。 Dual disk drive enclosures， dual disk drives， extra media bay。 Dual disk drive enclosures， dual disk drives and dual SCSI adapters。 Dual I/O planar， extra media bay， dual disk drive。
A system administrator wants to NFS mount a filesystem from server "Alpha" to server "Bravo." Which command should be issued from "Bravo" to determine which filesystems are being exported by server "Alpha"？ （） lsnfsmnt Alpha。 exportfs -l Alpha。 showmount -e Alpha。 mount -t nfs Alpha。
开孔封堵工艺常用于（）行业。 石油化工。 冶金。 电力。 煤矿。
The system administrator did a new install of AIX on a server about a week ago. The system was not rebooted after the installation. CDE is running on this system as is TCPIP. The system administrator has started configuring the system percompany directives. The power cable was inadvertently disconnected from the wall causing the sever to lose power. Upon reboot, the system appears to hang during log in from the console or from Xterminals. Which of the following is the most probable cause?（） It is a hardware problem caused by the power failure.。 There is a network problem, most probably with name resolution.。 Sine the system was never rebooted, devices are marked defined instead of available and need to be activated.。 Some filesets may be marked as broken and need to be reinstalled.。
城市生态社区建设的途径是什么？
卫星城从发生根源上看属于（）。
