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【单选题】
防火墙是隔离内部网和外部网的一类安全系统。通常防火墒中使用的技术有过滤和代理两种。路由器可以根据(1)进行过滤，以阻挡某些非法访问。(2)是一种代理协议，使用该协议的代理服务器是一种(3)网关。另外一种代理服务器使用(4)技术，它可以把内部网络中的某些私有地址隐藏起来。所谓的可信任系统(Trusted System)，是指美国国防部定义的安全操作系统标准，常用的操作系统UNIX和Windows NT等可以达到该标准的(5)级。A.
网卡地址
B.
IP地址
C.
用户标识
D.
加密方法
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Sentences: Direction: Choose the choice that best expresses the highlighted sentence. ( 4x5=20 points, 20% ) Jeremy Bentham was an English philosopher. He proposed many legal and social reforms which ...
A.
Bentham's legal and social proposals had a great influence.
B.
Bentham influenced many proposals on social and legal reforms.
C.
Bentham proposed many legal and ethical reforms.
D.
Bentham was influenced by social and legal reforms.
【简答题】一个老道，披件黄袍，脱了黄袍，一身长毛;拔去长毛，一身疙瘩，咬去疙瘩，一身疮疤打一农作物
【单选题】三、阅读理解 O. Henry was a pen name used by an American writer, William Sydney Porter. He was born in North Carolina in 1862. As a young boy he lived an exciting life. He did not go to school for very long...
A.
people thought he had stolen money from the bank
B.
he broke the law by not using his own name
C.
he wanted to write stories about prisoners
【单选题】若定义cin>>str;当输入 Microsoft Visual Studio 6.0! 所得的结果是str=(）。
A.
Microsoft Visual Studio 6.0!
B.
Microsoft
C.
Microsoft Visual
D.
Microsoft Visual Studio 6.0
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