To make audit information more productive， the DBA executes the following command before startingan audit operation： SQL> ALTER SYSTEM SET AUDIT_TRAIL=DB，EXTENDED SCOPE=SPFILE； Which statement is true regarding the audit record generated when auditing starts after restarting thedatabase（）
A、It contains only the plan for the SQL statement executed by the user.
B、It contains the SQL text executed by the user and the bind variables used with it.
C、It contains the plan and statistics associated with the SQL statement executed by the user.
D、It contains the plan for the SQL statement executed by the user and the bind variables used with it.
电话拨号连接是计算机个人用户常用的接入因特网的方式。称为非对称数字用户线的接入技术的英文缩写是（ ）。
A、ADSL
B、ISDN
C、ISP
D、TCP
Which of the following server types stores users’ home directory folders？（）
A、Application
B、File
C、Directory services
D、Print
在Windows 7中可以完成窗口切换的方法是（）。
A“Alt”+“Tab”
B“Win”+“Tab”
C单击要切换窗口的任何可见部位
D单击任务栏上要切换的应用程序按钮
Windows7操作系统中支持的打印机设备，包含以下类型（）
A、激光打印机
B、光速打印机
C、3D打印机
D、喷墨打印机
Which statements regarding the server parameter file （SPFILE） are true（）
AAn SPFILE is a binary file.
BAn SPFILE cannot reside on a client.
CAn SPFILE cannot contain static parameters.
DAn SPFILE can store changes persistently across instance restarts.
EAn SPFILE can be read by the database server， but it is not written to by the server.
FAn SPFILE must be created manually， before creating a database， even if you use the DatabaseConfiguration Assistant （DBCA） to create the database