1. 1 Network computing: a tutorial review Myungchul Kim mckim@icu.ac.kr Tel: 042-866-6127

2. 2 –By M. Revett, et al, IEE Electronics & Comm. Engineering Journal, Feb. 2001. SUN –Early 1990’s –‘the network is the computer’ –Network computing or network-centric computing –Applications reside on servers in the network and they are accessed remotely by client machines. Oracle –1995 –Network Computer (NC) Reduction in the total cost of ownership (TCO) –Administering PCs –No SW on the client device

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5. 5 –Network computing Internet computing: SUN –WWW, Java, HTML, applet, Java Virtual Machine Server-based computing: Citrix –Limited processing power and memory of the terminal device –Similar to ‘host-centric’ computing All applications and data are stored on the server. ‘thin-client computing’

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8. 8 –Advantages of network computing Simplicity –‘fat applications’ in the desktop-centric approach –Delivery of functionality to the user on demand in the network-computing Security –confidential information is often stored locally on PCs. –Viruses –End-users have no means to install software in the network computing. –Confidential information only on a server. –Network ‘snooping’ in the network computing Pay-per-use software –Rather than current a one-off fee for unlimited use. Mobile computing Total cost of ownership –The overall manageability and ease of use E-business