题1：公钥密码是(46)。常用的公钥加密算法有(47)，它可以实现加密和数字签名，它的一个比较知名的应用是(48)，这种应用的协商层用公钥方式进行身份认证，记录层涉及到对应用程序提供的信息的分段、压缩、数据认证和加密。

题2：CMM作为软件过程改进的一个指导，向软件开发者指出了软件开发过程中所需要注意的问题，告诉软件开发者应该"What to do"，但是并没有告诉人们"How to do"。为了解决这个问题，SEI随后推出了两种模型，(49)是个体软件过程改进，用于提高软件开发者的素质。而(50)描述了经过前者培训的工程师团队如何作为自我管理的团队，根据进度表生产出高质量的产品。

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Multipurpose Internet Mail Extension(MIME)is a(71)document messaging standard in the Internet enviroment, with MIME, users can send(72)Email messages that include audio, video, graphices, and text to any other user of a TCP/IP network. Richtext information can also be(73)into messages. It defines the fonts, formats, and(74)features of a document so the document can be easily(75)on many different types of systems.

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For each blank, choose the best answer from the four choices and write down on the answer sheet.

(66)is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication.

(67)is a professional organization of individuals in multiple professions which focuses on effort on lower-layer protocols.

(68)functions with two layers of protocols. It can connect networks of different speeds and can be adapted to an environment as it expands.

(69)is the popular LAN developed under the direction of the IEEE 802.5.

(70)is the popular backbone technology for transmitting information at high speed with a high level of fault tolerance which is developed under the direction of ANSI.

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