什么是面向对象？面向对象方法的特点是什么？
As an administrator at Certkiller.com， you have installed an Active Directory forest that has a single domain. You have installed an Active Directory Federation services （AD FS） on the domain member server. What should you do to configure AD FS to make sure that AD FS token contains information from the active directory domain（） ["Add a new account store and configure it.","Add a new resource partner and configure it","Add a new resource store and configure it","Add a new administrator account on AD FS and configure it","None of the above"]
前瞻性思维的实质是什么？（） ["概念延伸","概念混淆","概念创新","概念整合"]
管理信息系统既是一个社会系统，又是一个（）。 ["管理系统","计算机系统","人工系统","技术系统"]
电源两端导线因某种事故未经过负载而直接连通时称之为（） ["A.通路 ","B.开路 ","C.短路 ","D.回路"]
防火墙的功能表现在（）、（）、（）和（）四个方面。
