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ICANN 20 by程家禄.ppt

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ICANN 20 by程家禄.ppt

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文档介绍:— A Short Cut to the Reestablishment of National Sovereignty in the Cyberspace
Jia-Lu Cheng
Goldsmiths College,UOL
******@
2003/07/21
1
What is The ?
Domain Name TLD
ICANN
ICANN
The Future TLDs
Overview
2
What is the ?
According to . working Council (FNC), "" refers to the global information system that --
(i) is logically linked together by a globally unique address space based on the Protocol (IP) or its subsequent extensions/follow-ons;
(ii) is able to munications using the Transmission Control Protocol/ Protocol (TCP/IP) suite or its subsequent extensions/follow-ons, and/or other patible protocols; and
(iii) provides, uses or makes accessible, either publicly or privately, high level services layered on munications and related infrastructure described herein.
3
Domain Name System
Importance:
A set of distributed databases containing IP address and their corresponding domain name. From technical point of view, DNS is not a crucial pivot in the development of . From conceptual point of view, DNS is not a new concept puter science neither. Furthermore, from purely technical point of view, still can work even without DNS. However, for some historical reasons, today, if domain name servers crashed suddenly, then most munication via will be impossible.
4
Domain Name System
Features:
■ Universal address system
■ Uniqueness of the name of Domain
■ Tree-like hierarchical system
gTLD & ccTLD
RFC 920 – Domain Requirement (1982)
Using the name of categories of different aggregations of anizations and "free of undesirable semantics."
5
The Growth of Number and Percentage of Host
6
The Growth rate of Host
7
Percentage of the world's domains in the top twenty-five counties

Source: Zook (2000) ' Metrics: Using Host and Domain Name Counts to Map the ', munications Policy 24:613-20.
8
ccTLDs
Comparing to other TLDs, ccTLD is not a result of deliberative consideration or discussion. On the contrast, they w