Given the regular expression: 64900 . (65400-65410) Which AS Path matches the given regularexpression?（）

A、64900 65000 65500

B、64900 65402 65409

C、64900 65000 65300 65410

D、64900 65402 65405 65409

使用组合推理证明恒等式：

Which database does WX Central Management System (WX CMS) software use to store historical data?（）

A、Oracle

B、MySQL

C、Sybase

D、Microsoft Access

A technician is searching a knowledge base for the correct method of removing a virus. The knowledge base states that the key： HKEY_LOCAL_MACHINE/MICROSOFT/SOFTWARE/CURRENTVERSION/PAK needs to be deleted. Which of the following should the technician use to delete the key？（）

A、MSCONFIG

B、DEBUG

C、EVENTVIEWER

D、REGEDIT

An HACMP setting timer may used to allow：（）  

A、 The setting or fallback of a cluster custom resource group

B、 The cluster time to stabilize before starting a custom resource group

C、 A priority node time to acquire custom resource group at cluster start

D、 A fallover node time to process custom resource states to be monitored

After an unsuccessful synchronization or DARE update， which copy of the HACMP ODM remains  To prevent further changes from being made？（）  

A、 The ’Default’ configuration directory

B、 The ’Active’ configuration directory

C、 The ’Staging’ configuration directory

D、 The ’Snapshot’ configuration directory