在Access中，条件"性别＝"女"AND工资＞2000"的含义是指（）。

A、性别为女，并且工资大于2000的记录

B、性别为女，或者工资大于2000的记录

C、性别为女，并非工资大于2000的记录

D、性别为女或者工资大于2000的，且二者只选其一的记录

进程监视进程（PMON）的作用是什么？

You performed an incremental level 0 backup of a database: RMAN > BACKUP INCREMENTAL LEVEL 0 DATABASE; To enable block change tracking after the incremental level 0 backup, you issued this command: SQL > ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE ‘ /mydir/rman_change_track.f’; To perform an incremental level 1 cumulative backup, you issued this command: RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE; Which three statements are true?（）

Backup change tracking will sometimes reduce I/O performed during cumulative incremental backups.

The change tracking file must always be backed up when you perform a full database backup.

Block change tracking will always reduce I/O performed during cumulative incremental backups.

More than one database block may be read by an incremental backup for a change made to a single block.

The incremental level 1 backup that immediately follows the enabling of block change tracking will not read the change tracking file to discover changed blocks.

有以下程序#include #include void fun(int*p1,int*p2,int*s){　s=(int*)malloc(sizeof(int));　*s=*p1+*p2;}main(){　int a[2]={1,2}, b[2]={10,20},*s=a;　fun(a,b,s);　printf("%d",*s);}程序运行后的输出结果是（　　）。

A、1

B、10

C、11

D、2

Which configuration command prevents a client from establishing multiple PPPoE connections from a single workstation?（）

A、sessions

B、sa-validate

C、split-horizon

D、duplicate-protection

How would an AIX administrator find information regarding smit menu definitions （）

A、Use ODM commands

B、In the /smit.log file

C、In the /etc/environment file

D、In the/usr/lib/smit/menu.cfg file