下列数据结构具有记忆功能的是(25)。
设系统的失效率为λ，则系统的平均故障间隔时间：MTBF为______。
用路由器把一个网络分段，这样做的好处是(1)。
基于网络低层协议、利用协议或操作系统实现时的漏洞来达到攻击目的，这种攻击方式称为(41)。
在距离矢量路由协议中，防止路由循环的技术是(3)。
某计算机系统由子系统A、B、C串联而成，它们的寿命均服从指数分布，其中子系统A、B的MTBF分别是200h、400h。现要求整个系统的MTBF在100h以上，则子系统C的MTBF至少为h。
下面关于超级流水线的论述中，正确的是______。
在分布式环境中实现身份认证可以有多种方案，以下选项中最不安全的身份认证方案是(22)。
如图18-4所示是发送者利用不对称加密算法向接收者传送消息的过程，图中K1是(12)。
信息系统项目完成后，最终产品或项目成果应置于(9)内，当需要在此基础上进行后续开发时，应将其转移到(10)后进行。
Developing reliable software on time and within(31)represents a difficult endeavor for many organizations.Usually business solutions have three main aspects:people,(32), and technology. The main reason for failing software projects has little to do with technology and tools, and much to do with lack of process(33). Experience has shown that introducing new technology and tools in an immature or undisciplined environment is likely to increase the chaos. CASE tools are not enough. "A fool with a tool is still a fool?"Structured method was the first wave of the software industry. This was the beginning of transforming software development from a"(34)industry' to mass production. Software process movement if the second wave in the software industry. The process maturity movement prepares the way for the third wave of the software industry: "software industrialization". Software development will become like an assembly and manufacturing process. A critical enabling factor is a disciplined software engineering process with predictable quality,(35)and functionality.