Which statement is true？（）

A、A class’s finalize（） method CANNOT be invoked explicitly.

B、super.finalize（） is called implicitly by any overriding finalize（） method.

C、The finalize（） method for a given object is called no more than once by the garbage collector.

D、The order in which finalize（） is called on two objects is based on the order in which the two objects became finalizable.

Which of the following is the lowest cost enterprise class IBM Storage System that can support anExchange 2010 solution?（）

A、DS5100 

B、Storwize V7000 

C、DS8700 

D、XIV system

Describe the benefits of a virtual tape solution over a native tape solution in a mainframe serverenvironment.（）

A、 the use of physical LTO-5 drives and cartridges for virtualization reduces the overall floor spacerequired for the virtual tape solution 

B、 the virtual tape solution reduces the number of cartridges and physical drives required, andimproves throughput 

C、 the virtual tape solution provides a faster robotic access to virtual cartridges sent to the physicaltape librarywhich guarantees faster accesstimes 

D、 the virtual tape solution provides a larger range of virtual tape drives and automates the backupprocess to physical tape by full synchronousreplication 

Which IBM resource should be used to validate the results from a Disk Magic study PRIOR topresenting the final storage solution and pricing to a customer?（）

A、Customer Engineer 

B、Storage Sales Specialist 

C、Competeline Representative 

D、Field Technical Storage Specialist (pre-sales)

在关系中能唯一标识元组的最小属性集称为该表的键或码。二维表中可能有若干个键，它们称为该表的（　　）。

A、连接码

B、关系码

C、外码

D、候选码

涉密机不得安装、开启无线网络设备，内网机可视情况安装、开启无线网络设备。

A、对

B、错