An AIX system administrator wants to reset the level at which the SIGDANGER signal is sent to processes so appropriate actions can be taken when paging space is running low. Which of the following commands is used to reset the level？（）
A、 vmtune -w
B、 svmon -w
C、 schedtune -w
D、 vmstat -s
假设有以下一段天气预报：“北京地区今天白天晴，偏北风3级，最高气温12℃，最低气温－2℃，降水概率15%。”请用框架表示这一知识。
Which High Availability solution can provide a consistent, time-delayed (for example, one hour) snapshot of the live production database?（）
A、MySQL Replication
B、Distributed Replication Block Device
C、Windows Server Failover Clustering
D、MySQL Cluster
Which MySQL utility program should you to process and sort the slow Query log based on query time or average query time?（）
A、Mysqlaccess
B、Mysqldump
C、Mysqlshow
D、Mysqlslow
E、Mysqldumpslow
Which is the packaging strategy of iDataPlex of the following？（）
A、Fourteen servers per rack likeBladeCenter
B、Two servers per rack for optimal cooling cost
C、One server per rack for optimal cooling and energy efficiency
D、Four servers per rack （twoexach half high） for optimal cooling
Referring to the exhibit, which statement is correct?（）
A、 The packets have exceeded the time-to-live value
B、 There is a loop
C、 The asterisks indicate a response time out
D、 The asterisks indicate that the traceroute is completed.