[单选]
You want to set the following initialization parameters for your database instance：
LOG_ARCHIVE_DEST_1 = ’LOCATION=/disk1/arch’ LOG_ARCHIVE_DEST_2 = ’LOCATION=/disk2/arch’ LOG_ARCHIVE_DEST_3 = ’LOACTION=/disk3/arch’ LOG_ARCHIVE_DEST_4 = ’LOCATION=/disk4/arch MANDATORY’
Identify the statement that correctly describes this setting.（）

A . The MANDATORY location must be a flash recovery area.
B . The optional destinations may not use the flash recovery area.
C . This setting is not allowed because the first destination is not set as MANDATORY.
D . The online redo log file is not allowed to be overwritten if the archived log cannot be created in the fourth destination.

Which administration tool is used to enable or disable the logging and tracing of WebSphere Commerce components？（） Configuration Manager。 WebSphere Application Server Administrative Console。 WebSphere Commerce Administration console。 Store Services。 WebSphere Commerce Accelerator。 Which of the following commands would a system administrator run tovalidate /etc/tunables/nextboot after manually editing（） ksh -n nextboot。 tunsave -a -f nextboot。 tuncheck -r -f nextboot。 tunsave nextboot。创业者应符合哪些方面的要求？举例说明体育比赛中的观众效应现象？ The ping loopback hangs with no output. Which of the following is the most likely cause？（） The loopback interface is down and resolv.conf is configured.。 The loopback is not in /etc/hosts and resolv.conf is configured.。 The loopback interface is down and resolv.conf is not configured.。 The loopback is not in /etc/hosts and resolv.conf is not configured.。

You want to set the following initialization parameters for your database instance：
LOG_ARCHIVE_DEST_1 = ’LOCATION=/disk1/arch’ LOG_ARCHIVE_DEST_2 = ’LOCATION=/disk2/arch’ LOG_ARCHIVE_DEST_3 = ’LOACTION=/disk3/arch’ LOG_ARCHIVE_DEST_4 = ’LOCATION=/disk4/arch MANDATORY’
Identify the statement that correctly describes this setting.（）

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