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Unformatted text preview: the end. “Internet” are used interchangeably, they are
technically different. • The Internet is a network.
• The Web is a distributed set of communications Internet Protocol (IP) assigns a unique
address to each computer on the Internet. applications and system software with the following
– Resides on the Internet hosts and clients
– Uses the TCP/IP network protocol BUSI 335 Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 9 BUSI 335 Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 10 Access Models of the Web Web Characteristics
• Understands HTML (HyperText Markup Language) • General Access • Follows the client/server model – Everyone can access the Web sites • Enables client programs (e.g. browsers) with • Intranet consistent user interface to access servers by using
HTTP, FTP, Telnet, and Gopher – Only internal staff can access the Web sites • Extranet • Uses URLs (Uniform Resource Locator) for document
addressing – Specific groups of external partners have access to
the corporate Web sites • Distributes various types of information such as text,
video, audio, and images. BUSI 335 Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 11 BUSI 335 Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 12 Intranet Advantages of the Intranet • Web applications that are internal to organizations and protected by a • Improve information sharing by centralizing access to firewall distributed sources of information
• Improve cost and time efficiency by distributing
information without requiring too much printing,
faxing, and copying
• Shorten application deployment and development
• Leverage intellectual capital • Uses Internet technologies such as Web servers, browsers, and
standard TCP/IP networks • A firewall is like a guard dog in a warehouse
• It is NOT defined by any physical boundaries or geographical constraints
• It is defined by those who have access to the information BUSI 335 Copyright © 2009-10 Y.M. Cheung, Willi...
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- Spring '12