A customer has a very large number of physical Windows-based servers and no centralized storage. Which technology solution will help the customer to reduce the footprint of their existing server estate?（）

A、z/OS, DS8000, TSM

B、TSM, LTO-5, VMware

C、System x, VMware, XIV

D、System p, VMware, DS5000

You are in the middle of a transaction and very crucial data has been modified. Because of a hardware failure， the instance has shut down before synchronizing all the database files. Which two statements are true？（）

On startup， SMON coordinates instance recovery.

On startup， CKPT coordinates instance recovery.

On startup， use RMAN to perform instance recovery.

Uncommitted changes will be rolled back after the database is opened.

On startup， perform media recovery and then instance recovery.

On startup， all the files will be synchronized and you get both committed and uncommitted data.

消毒后的内镜合格标准为细菌总数（）

A、≤10cfu／件

B、≤20cfu／件

C、≤30cfu／件

D、≤100cfu／件

E、≤200cfu／件

使用匿名FTP首先遇到的最大的问题是（）

A、必须向FTP服务器付费

B、必须预先知道所要的文件存放在哪个服务器中

C、必须在自己的微机中装入图形界面软件，如Windows等

D、必须以PPP方式入网

Which three statements are true regarding the logical structure of the Oracle database？（）

Each segment contains one or more extents.

Multiple tablespaces can share single data file.

A data block is the smallest unit of I/O for data files.

It is possible to have tablespaces of different block sizes in a database.

Each data block in the database always corresponds to one OS block.

You work in a data warehouse environment that involves the execution of complex queries. The current content of the SQL cache holds the ideal workload for analysis. You want to analyze only few most resource-intensive statements. What would be your suggestion to receive recommendations on the efficient use of indexes and materialized views to improve query performance？（）

A、Run the SQL Access Advisor.

B、Run the SQL Tuning Advisor （STA）.

C、Run the Automatic Workload Repository （AWR） report.

D、Run the Automatic Database Diagnostic Monitor （ADDM）.