| 软件水平考试系统分析师易错题（2018/10/18） |
| 第1、2题：两个公司希望通过Internet进行安全通信保证从信息源到目的地之间的数据传输以密文形式出现，而且公司不希望由于在传输节点使用特殊的安全单元而增加开支，最合适的加密方式是(1)，使用的会话密钥算法应该是(2)
(1) A、链路加密 B、节点加密 C、端—端加密 D、混合加密 (2) A、RSA B、RC—5 C、MD5 D、ECC |
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| 第3题：以下对软件工程管理的任务和目标最准确的描述是( )
A、明确软件开发项目的工作范围、可能遇到的风险、需要的资源 B、明确软件开发中要实现的任务和需要经历的里程碑 C、明确所需的工作量以及进度安排 D、以上所有答案 |
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| 第4题：对于“指针”和“链”，下面的说法正确的是，( )
A、它们是数据物理组织的两种形式 B、它们是数据逻辑组织的两种形式 C、它们是数据物理组织的两种基本工具 D、它们是数据逻辑组织的两种基本工具 |
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| 第5、6、7、8、9题：In the following essay, each bland has four choices.Choose the best answer and write down on the answer sheet. With the implementation of (6) the so – called network has become a reality. The provision of such facilities is the most important part of the network requirements. However, in many applications the communicating computers may be of different types. This means that they may use different programming languages and, more importantly, different forms of (7) interface between user(application)program, normally referred to ,as application processes, and the underlying communication services may be (8). For example, one computer may be a small single-user computer, while another may be a large (9) system. In the earlier days of computer communication, these issues meant that only closed communities of computers (that is, from the same manufacturer) could communicate with each other in a meaningful way. IBM’s systems NetworkArchitecture (SNA、andDEC’sDigital NetworkArchitectureDNA、are just two examples of communication software packages produced by manufacturers to allow their systems to be intercormected together. These proprietary packages, however, of which there am still many inexistence, do not address the problem of universal interconnect ability, or open systems interconnection. In an attempt to alleviate this problem,(10) ,in the late 1970s,formulated a reference model to provide a common basis (or the coordination of standards developments and to allow existing and evolving standards activities to be placed into perspective with one another.
(6) A、communicationchannel B、protocols C、datachannel D、publiccommunication (7) A、database B、datarepresentation C、protocols D、datacommunication (8) A、same B、similar C、different D、dependent (9) A、multi-user B、client C、server D、full-user (10) A、DNA B、SNA C、theOSI D、theISO |
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| 第10题：虚拟存储器的最大容量( )
A、为主辅存容量之和 B、由计算机的地址结构决定 C、是任意的 D、由作业的地址空间决定 |
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