Which three statements about performance analysis by SQL Performance Analyzer are true? （）(Choose three.)

A

It detects changes in SQL execution plans.

B

It produces results that can be used to create the SQL plan baseline.

C

The importance of SQL statements is based on the size of the objects accessed.

D

It generates recommendations to run SQL Tuning Advisor to tune regressed SQLs.

E

It shows only the overall impact on workload and not the net SQL impact on workload.

View the Exhibit to examine the replay settings for replay parameters.What is the implication for setting the values for replay parameters?（）

The COMMIT order in the captured workload is preserved during replay.

The value 100 in the THINK_TIME_SCALE parameter attempts to make the replay client shorten the think time between calls.

The value 100 in the CONNECT_TIME_SCALE parameter attempts to connect all sessions as captured.

The value 100 in the THINK_TIME_SCALE parameter attempts to match the captured user think time while replaying.

The value 100 in the CONNECT_TIME_SCALE parameter attempts to connect all sessions immediately as soon as the replay begins.

Which statements are true regarding the system-defined moving window baseline in Oracle Database 11g?（）

It does not allow you to change the moving window size.

Adaptive threshold functionalities use it by default to compute statistics.

It is created by default with the window size being equal to the AWR retention time.

It is created when the first snapshot is collected by the Automatic Workload Repository (AWR).

A DNS server for a large network is experiencing performance problems.  Which of the following options is the best solution to fix the problem？（）

A、Enable NIS

B、Purchase a larger server

C、Use /etc/hosts on all of the systems

D、Create secondary name servers throughout the network

How do you enable interface fe-0/0/0 under the [edit protocols isis] level to form both a Level 1 and Level 2 adjacency?（）

A、set interface fe-0/0/0.0

B、set interface fe-0/0/0.0 all level

C、set interface fe-0/0/0.0 level 3 enable

D、set interface fe-0/0/0.0 level 1 level 2

Internet中域名与IP地址之间的翻译由（）完成。

A、域名服务器

B、代理服务器

C、FTP服务器

D、Web服务器