2018年1月,信管网系统集成公司中标本市某地铁线路的列车乘客信息系统项目,内容包括地铁公司运营中心节目播放控制软件、地铁列车节目接收软件以及服务器、播放终端等硬件设施的搭建工作。公司任命小陈为项目经理,并从各部门抽调了经验丰富的工程师组成了项目团队。小陈依据过去多年从事会议场所多媒体播控系统的经验,自己编写了项目范围说明书,并依此创建了WBS和WBS词典,形成项目范围基准。在项目实施过程中,由于与供应解码设备的厂商发生合同纠纷,项目组不得不重新寻找新的合作厂商,并针对新的解码设备,重新开发接口软件,致使项目工期拖延。客户针对播放控制软件,要求增加断点续传的功能,开发人员认为工作量不大就自行增加了该功能。项目测试时,小陈发现与之前做的项目不同,地铁运行时数据是通过车地无线网络传输,带宽有限,网络丢包现象严重,导致视频节目播放时,经常卡顿,马赛克现象严重,究其原因发现是WBS中解决该问题的软件模块没有开发。验收时,客户对项目执行情况很不满意,小陈觉得客户吹毛求疵与客户发生了争执,导致客户向公司高层投诉。 分解是一种将项目可交付成果和项目工作分解成较小的、更易于管理的组件的技术,请指出要将整个项目分解为工作包,需要开展哪些主要活动?
案例分析题(1)is the science of hiding information. Whereas the goal of cryptography is to make data unreadable by athird party.the goal of steganography([ˌstegə’nɒgrəf ]隐写术)is to hide the data from a third party. In thisarticle,I will discuss what steganography is,what purposes it serves,and will provide an example using available software.There are a large number of steganographic(2)that most of us are familiar with(especially if you watch a lotof spy movies),ranging from invisible ink and microdots to secreting a hidden message in the second letter of each word of a large body of text and spread spectrum radio communication. With computers and networks,there are many other ways of hiding informations,such as:Covert channels(c,g,Loki and some distributed denial-of-service tools use the Internet Control(3)Protocol,or ICMP,as the communication channel between the “badguy”and a compromicyed system)Hidden text with in WebpagesHiding files in “plainsight”(c,g.what better place to “hide” a file than with an important sounding name in the c:\winnt system32 directory)Null ciphers(c,g,using the first letter of each word to form a hidden message in an otherwise innocuous text)steganography today,however,is significantly more(4)than the example about suggest,allowing a user tohide large a mounts of information within image and audio.These forms of steganography often are used in conjunction with cryptography so the information is double protected;first it is encrypted and then hidden so that an advertisement first.find the information(an often difficult task in and of itself)and the decrypted it.The simplest approach to hiding data within ani mage file is called(5)signature insertion.In this method,we can take the binary representation of the hidden data and the bit of each byte within the covert image.If we areusing 24-bit color the amount and will be minimum and indiscriminate to the human eye. (1)处选择()
A. Cryptography
B. Geography
C. Stenography
D. Steganography
我国城镇职工基本养老金由基础养老金和企业养老金构成。
A. 对
B. 错
在资源要素管理中,工具管理是其一项主要管理内容,其中工具的基本运营管理中不不包括下面选项中的()
A. 保持稳定性,按生产系统管理
B. 挑选合适的员工进行日常维护
C. 适时的改进
D. 不断进行工具测试