You received complaints about the degradation of SQL query performance. You identified top SQL queries that consume time. What would be your next step to find out recommendations about statistics collection and restructuring of the SQL statement to improve query performance？（）
A、run Segment Advisor
B、run SQL Tuning Advisor on top SQL statements
C、run the Automatic Workload Repository （AWR） report
D、run the Automatic Database Diagnostic Monitor （ADDM）on top SQL statements
You have a Level 1-only router (Router A) in IS-IS area 49.0001. How does Router A learn how to get to IP prefixes in other areas?（）
A、Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001.
B、The Level 1/Level 2 router in area 49.0001 sets the attached bit in the Level 1 link-state PDU (LSP) it floods into area 49.0001.
C、The Level 1/Level 2 router in area 49.0001 sets the attached bit in the Level 2 LSP it floods into area 49.0001.
D、The Level 1/Level 2 router in area 49.0001 advertises these prefixes into area 49.0001 using a Level 2 LSP it floods into the area.
WinZip中创建一个自解压压缩文档快捷键（）。
A、F8
B、Alt+F4
C、Ctrl+A
D、Shift+K
数据库的故障恢复一般是由（ ）来执行恢复。
A、电脑用户
B、数据库恢复机制
C、数据库管理员
D、系统普通用户
为了使每秒钟发生一次计时器事件，可以将其Interval属性设置为（ ）。
A、1
B、10
C、100
D、1000
Which script must you to query to display the code associated with RMAN stored scripts？（）
A、RC_STORED_SCRIPT
B、RC_STORED_SCRIPT_LINE
C、RC_SCRIPTS
D、RC_STORED_LINE_SCRIPT
E、None of the other alternatives apply