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论文作者:www.51lunwen.org论文属性:硕士毕业论文 dissertation登出时间:2014-07-31编辑:felicia点击率:34959
论文字数:14721论文编号:org201407282302474909语种:英语 English地区:中国价格:免费论文
关键词:云计算Cloud Computing信息分享资源分享distributed resourcesdivided possessions
摘要:本文是一篇计算机网络留学生论文。云计算是随着计算机的发展而新兴的一种信息分享方式,人们可以通过云计算进行信息分享,互动交流。云计算作为一个创新计算的概念,它的使用提高了计算机应用的便捷性,本文主要分析了云计算在计算机应用中的作用和意义。
The hybrid cloud is mainly the blend of two or more than two clouds i.e. (private, community, or public)
Become the uncommon bodies which are stringed to each other by harmonized or proprietary technology which allows interoperability. Same as the various operational models which impacts to the industrial range and organized surroundings. That's why this model gives assistance to the cloud which impacts it.
Three well-known and frequently-used service models are the following:
Software-as-a-Service. Software-as-a-Service (SaaS) is an on demand software services in which user gets access to the required software thorough some intermediate client like browser using internet. Software platform and relevant files are stored centrally. It drastically reduces the total cost of software for the user as it does not require user to incur any infrastructure cost which include hardware installation cost, maintenance cost and operating cost. Subscribers of these services are only given limited control related to the desired software including any preference selection and administrative setting. They do not have any control over the underlying cloud infrastructure.
Platform-as-a-Service. Platform-as-a-Service (PaaS) is an on demand platform delivery model. In this user is provided with the complete software platform which is used by the subscriber to develop and deploy software. It also result in considerable saving for the subscriber as he does not have to incur costs related to buying and managing of complicated hardware and software components required to support the software development platform. The special purpose development environment is tailored to the specific needs of the subscriber by the cloud service provider. Good enough controls are given to the subscriber to aid in smooth development of software.
Infrastructure-as-a-Service. Infrastructure-as-a-Service (IaaS) is an on demand infrastructure delivery services. In this host of computing servers, softwares, and network equipments are provided. This infrastructure is used to establish platform to develop and execute software. Subscriber can cut down his cost to bare minimum by avoiding any purchase of hardware and software components. Subscribers is given quite a lot of flexibility to choose various infrastructural components as per the requirements. Cloud subscriber controls the maximum security features.
Figure illustrates the differences in scope and control between the cloud subscriber and cloud provider.
Given central diagram shows the five conceptual layers of a cloud environment which apply to public clouds and other deployments models
The arrows at the left and right of the diagram denote the approximate range of the cloud provider's and user's scope and control over the cloud environment for each service model.
Cloud subscriber's extent of control over the system is determined by the level of support provided by the cloud provider. Higher the support by cloud provider lower is the scope and control of the subs本论文由英语论文网提供整理,提供论文代写,英语论文代写,代写论文,代写英语论文,代写留学生论文,代写英文论文,留学生论文代写相关核心关键词搜索。