单选题Why is ______ fun? What delights may its practitioner expect as his reward? First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the ______ nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes ______, sometimes theoretical, and sometimes both. Finally, there is the delight of working in such attractable medium. The ______, like the poet, works only slightly removed from pure thought-stuff. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures.
Yet the program ______, unlike the poet"s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.
单选题信息系统结构化开发方法有若干基本原则,下列不属于结构化方法基本原则的是______。
单选题在故障及问题管理中,鱼骨图法被经常用于______活动。
单选题IT组织结构的设计受到很多因素的影响和限制,同时需要考虑和解决客户位置、IT员工工作地点以及职能、______与IT基础架构的特性等问题。
单选题WWW服务器与客户机之间采用______协议进行网页的发送和接收。
单选题软件开发人员通常用 (13) 软件编写和修改程序。
单选题数据库管理系统提供了数据库的安全性、______和并发控制等机制以保护数据库的数据。它提供授权功能来控制不同用户访问数据的权限,主要是为了实现数据库的______。
单选题某网络结构如下图所示。在Windows 操作系统中配置Web 服务器应安装的软件是 (66) 。在配置网络属性时 PC1 的“默认网关”应该设置为 (67) ,首选 DNS 服务器应设置为 (68) 。
单选题通过代理服务器可使内部局域网中的客户机访问Internet,______不属于代理服务器的功能。
单选题在结构化分析活动中,通常使用______描述数据处理过程。
单选题队列是一种按“________”原则进行插入和删除操作的数据结构。
单选题在Windows操作系统中,如果没有默认的浏览jpg格式文件的程序,那么当用户双击 “IMG _20160122 _103.jpg"文件名时,系统会自动通过建立的( )来决定使用什么程序打开该图像文件。
单选题软件测试的主要步骤有______。 Ⅰ.单元测试 Ⅱ.集成测试 Ⅲ.确认测试
单选题按照计算机同时处于一个执行阶段的指令或数据的最大可能个数,可以将计算机分为MISD、MIMD、SISD及SIMD 4类。每次处理一条指令,并只对一个操作部件分配数据的计算机属于______计算机。
单选题《计算机软件产品开发编制指南》(GB 8567—1988)是______标准。
单选题随着企业所建的信息系统越来越多,对统一身份认证系统的需求越来越迫切,该系统为企业带来的益处包括 (47) 。
① 用户使用更加方便 ② 安全控制力度得到加强
③ 减轻管理人员的负担 ④ 安全性得到提高
单选题系统维护项目有软件维护、硬件维护和设施维护等。各项维护重点不同,那么系统维护重点是______。
单选题Microwave communication uses (71) -frequency radio waves that travel in straightline sthrough the air. Because the waves cannot (72) with the curvature of the earth, they can be (73) only over short distance. Thus, microwave is a good (74) for sending data between buildings in a city or on a large college campus. For longer distances, the waves must be relayed by means of "dishes" or (75) . These can be installed on towers, highbuildings, and mountain tops.
单选题系统日常操作日志应该为关键性的运作提供审核追踪记录,并保存合理时间段。利用日志工具定期对日志进行检查,以便监控例外情况并发现非正常的操作、未经授权的活动、______等。
单选题风险发生前消除可能发生的根源并减少风险事件的概率,在风险事件发生后减少损失的程度,被称为( )。
