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[单选] A system administrator needs to upgrade the Oracle database from Version 7 to Version 8.  Which of the following scheduling concerns should be considered?()

A . Schedule enough down time to backup, upgrade and reboot. 
B . Backup, upgrade, then schedule enough down time to reboot the system.
C . Backup, then schedule enough down time to upgrade and reboot the system. 
D . There are no scheduling concerns because no down time is required.

The system administrator notices that IP packets are not getting forwarded. The system administrator wants to use an AIX machine as an internetwork router over TCP/IP networks. Which of the following commands will allow this change on the fly?()  Some network attributes are runtime attributes that can be changed at any time. Others are loadtime attributes that must be set before the netinet kernel extension is loaded and be placed in the /etc/rc.net or /etc/rc.bsdnet file. This parameter cannot be done on the fly, since a reboot is required.。  Add to the /etc/rc.net file or if a Berkelye-style network configuration, /etc/rc.bsdnet, and issue the command: no -a ipforwarding=1 to start ipforwarding immediately.。  Add to the /etc/rc.net file or if a Berkeley-style network configuration, /etc/rc.bsdnet, and issue the command: no -o ipforwarding=0 to start ipforwarding immediately.。  Add to the /etc/rc.net file or if a Berkeley-style network configuration, /etc/rc.bsdnet, and issue the command: no -o ipforwarding=1 to start ipforwarding immediately.。 YSP-50型钢瓶的检验周期是()。 每6年一次;。 每5年一次;。 每3年一次;。 每4年一次。 The first step documented in Company.com’s HACMP test plan is to start the cluster manager on the normal service node and verify that HACMP daemons have started with the ’lssrc -g cluster" command.  What daemons MUST show as active in the ’lssrc -g cluster" command to have an operational cluster?()    clstrmgrES,clsmuxpdES。  topsvcsd,grpsvcsd,exaixos。  topsvcsd,grpsvcsd,clinfoES,grglsmd。  clstrmgrES,clsmuxpdES,topsvcsd,grpsvcsd。 Which of the following logical volume placement policies is likely to give the best performance in most cases, all other factors being equal?()  INTRA-POLICY set to ’edge’, INTER-POLICY set to maximum。  INTRA-POLICY set to ’center’, INTER-POLICY set to maximum。  INTRA-POLICY set to ’middle’, INTER-POLICY set to minimum。  INTRA-POLICY set to ’center’, INTER-POLICY set to minimum。 保额递增型保单的保额随着保单年度的增加而增加,它适用于()。 债权人购买。 债务人购买。 预期通货膨胀者购买。 预期通货紧缩者购买。 A system administrator needs to upgrade the Oracle database from Version 7 to Version 8.  Which of the following scheduling concerns should be considered?()
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