Which two statements are correct regarding default protocol preference values?（）

A

OSPF has a single preference value for both internal and external routes.

B

RIP is preferred over OSPF external routes.

C

Direct, local, and static routes have the same preference value.

D

OSPF's preference value is lower than BGP (both IBGP and EBGP).

设有一个命令按钮Command1的事件过程以及一个函数过程。程序如下：连续单击命令按钮三次，第三次单击命令按钮后，窗体上显示的计算结果是（　　）。

A、10

B、30

C、60

D、70

New AIX systems arrive without a CDROM drive. All systems do not have the system hardware configuration. Which of the following options is the most appropriate way to install AIX on the systems?（）

A、Install CDROM drives or tape drives on the systems because that is the only way to install AIX.

B、Install one system. Take a mksysb from the first system and resotre the mksysb to the remaining systems.

C、Install one system. Mirror rootvg onto a disk from each of the remaining systems.

D、Setup and NIM master and resources.

有关系R如下，其中属性B为主键：　　则其中最后一个记录违反了（　　）。

A、实体完整性约束

B、参照完整性约束

C、用户定义的完整性约束

D、关系完整性约束

View the Exhibit and examine the initialization parameter settings. Which three initialization parameters are to be set manually as they are not automatically tuned（）

LOG_BUFFER

SORT_AREA_SIZE

JAVA_POOL_SIZE

STREAMS_POOL_SIZE

DB_16K_CACHE_SIZE

DB_KEEP_CACHE_SIZE

看组合视图时，一般是用（）即可看懂，遇到疑难问题时再用线面分析法分析线面的性质和形成过程，从而将视图全部看懂。

A、形体分析法

B、切割分析法

C、组合分析法

D、基本分析法