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According to the specific requirements of environment of National Computer Rank Examination (NCRE), through the introduction horizon architecture of desktop virtualization software (WMware View) and introduction its method of installation, debugging, finally realizes the purpose of cloud computing examination of NCRE using desktop virtualization. Desktop virtualization in the application of the NCRE, can greatly reduce the work burden of computer room management personnel, improve the NCRE computer room deployment efficiency, and greatly satisfy the convenience of mobile learning requires, so students learning cannot be influenced by the computer room the constraints of physical location, greatly improve the passing rate of the NCRE. Keywords-NCRE; cloud computing; desktop virtualization; mobile learing; computer room administrator

At present, the education informatization application has entered the transition period, is gradually by building the campus network and other infrastructure platform to deepen the application, application to drive the development of modern education transformation development. How to make use of a new generation of information technology, to realize the rapid development of education informatization education informatization construction is facing new challenges. And with the popularity of cloud computing technology and application, and promote the development of desktop virtualization, compared with the traditional PC application solutions for its low cost, high reliability, low maintenance, high security, the characteristics of flexibility, more and more popular in the education industry[1]. On the fifth plenary session of the 17th, the state council issued "the state council on speeding up cultivating and developing strategic emerging industries decided to », put forward to develop the strategic emerging industries, the GDP ratio rose from 8% in 2015 to 15% in 2020. A new generation of information technology as an important branch of strategic emerging industries, also got » « decision support, a reference to promote the Internet of things, cloud computing research and demonstration application. From domestic market penetration, "twelfth five-year" period will be cloud computing industry the most critical period of growth, the cloud computing market will enter the growth stage, the industry will be rapid growth. Is expected to around 2015, cloud computing applications will begin to enter the mature stage of development. The cloud services over the next five years the average annual compound growth rate is expected to reach more than 30%, the development speed is more than 6 times of traditional IT industry.

With the development of information technology, enterprises are increasingly challenged in internal IT equipment management. A huge number of PC devices made enterprises' daily management of employees' personal computer a complex task, and enterprises often need to invest lots of manpower and resources in upgrades, security policy, and routine equipment maintenance. While with workplaces scattered, mobile devices began to be used in office, enterprises are faced with the challenge of mobile office, and the traditional PC devices cannot fully meet the office needs of enterprises. The concept of cloud computing has risen in recent years; cloud desktop, this new form of office equipment, also came into people's view. As an extension of virtualization, cloud desktop, which relies on server-side computing, has high safety, easy management, and is suitable for mobile devices. Cloud Desktop has already had a large number of application cases at home and abroad, pointing a new way for IT office equipment selection. Index Terms - Cloud computing, desktop virtualization, application, prospects

Focusing on the design and construction of desktop virtualization of university library system, this article discusses the problems in current information construction of university libraries and makes an introduction to cloud computing and the basic concept and systematic structure of desktop virtualization. Based on the VMware VSphere5 software, overall virtual desktop of university library has been realized, which solves the issues lied in which utility private cloud technology in university library system. Index Terms - desktop virtualization, private cloud, university library, VMware VSphere5