Which procedure should be used to configure the system to prevent all users from using the ’at’ command（）？ Create a /var/adm/cron/at.allow file with no entries。 Create a /var/adm/cron/at.deny file with ’*’ as the only entry。 Create a /var/adm/at/at.deny file with ’ALL’ as the only entry。 Create a /var/adm/at/at.allow file with ’NONE’ as the only entry。
浇水、施肥
Given that t1 is a reference to a live thread, which is true?（） The Thread.sleep() method can take t1 as an argument.。 The Object.notify() method can take t1 as an argument.。 The Thread.yield() method can take t1 as an argument.。 The Thread.setPriority() method can take t1 as an argument.。 The Object.notify() method arbitrarily chooses which thread to notify.。
Globalization support is implemented through the text- and character-processing functions provided by which Oracle feature？（） RSTLNE。 NLSRTL。 LISTENER。 NLSSORT。 Linguistic sort。
220KV电压等级，户外无遮栏，裸导线体至地面最小安全净距为（）。 3.0米。 4.3米。 4.5米。
A retail customer has a database application that is accessed by a large number of people through a web interface from multiple remote locations. Which of the following questions will provide the information necessary to design the best performing storage solution?（）
