Services - WORLD INTERNET USAGE AND POPULATION STATISTICS...

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WORLD INTERNET USAGE AND POPULATION STATISTICS World Regions Population ( 2009 Est.) Internet Users Dec. 31, 2000 Internet Users Latest Data Penetration (% Population) Growth 2000- 2009 Users % of Table Africa 991,002,342 4,514,400 67,371,700 6.8 % 1,392.4 % 3.9 % Asia 3,808,070,503 114,304,000 738,257,230 19.4 % 545.9 % 42.6 % Europe 803,850,858 105,096,093 418,029,796 52.0 % 297.8 % 24.1 % Middle East 202,687,005 3,284,800 57,425,046 28.3 % 1,648.2 % 3.3 % North America 340,831,831 108,096,800 252,908,000 74.2 % 134.0 % 14.6 % Latin America/Caribbe 586,662,468 18,068,919 179,031,479 30.5 % 890.8 % 10.3 % Oceania / Australia 34,700,201 7,620,480 20,970,490 60.4 % 175.2 % 1.2 % WORLD TOTAL 6,767,805,208 360,985,492 1,733,993,741 25.6 % 380.3 % 100.0 % NOTES: (1) Internet Usage and World Population Statistics are for September 30, 2009. (2) CLICK on each world region name for detailed regional usage information. (3) Demographic (Population) numbers are based on data from the US Census Bureau . (4) Internet usage information comes from data published by Nielsen Online , by the International Telecommunications Union , by GfK , local Regulators and other reliable sources. (5) For definitions, disclaimer, and navigation help, please refer to the Site Surfing Guide . (6) Information in this site may be cited, giving the due credit to www.internetworldstats.com . Copyright © 2001 - 2009, Miniwatts Marketing Group. All rights reserved worldwide.
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Global Top Website The sites in the top sites lists are ordered by their 1 month traffic rank which is calculated using a combination of average daily visitors and pageviews over the past month. 1.Google 2.Facebook 3.YouTube 4.Yahoo! 5.Windows Live 6.Wikipedia 7.Blogger.com 8.Baidu.com 9.Microsoft Network (MSN) 10.QQ.COM
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Some Protocols in TCP/IP Suite
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TCP Header Format
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The Characteristics of Client Application Software It is an arbitrary application program that becomes a client temporarily when remote access is needed. It is invoked directly by a user, and executes only for one session. It runs locally on a user’s PC. It actively initiates contact with a server. It can access multiple services as needed, but actively contacts one remote server at a time. It does not require special hardware or a sophisticated OS.
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The Characteristics of Server Application Software It is a special-purpose, privileged program dedicated to providing one service. It is invoked automatically when a system boots, and continuous to execute via many sessions. It runs on a shared computer. It waits passively for contact from arbitrary remote clients. It accepts multiple contacts from arbitrary clients, but offers a single service. It requires powerful hardware and a sophisticated OS.
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Email Email passes from one mail server to another as it travels over the Internet. The standard protocol used is called SMTP (Simple Mail Transfer Protocol). It works in conjunction with POP (Post Office Protocol) servers. Once it arrives at the destination mail server, it is stored in an electronic mailbox until the recipient retrieves it.
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Email Systems Sender - the originator who composes and sends email messages User Agent ( UA ) – an email interface program accepts a variety of commands for composing, receiving, and replying to messages, as well as for manipulating mailboxes.
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This note was uploaded on 01/11/2011 for the course EE 5413 taught by Professor Hingcheungso during the Spring '10 term at City University of Hong Kong.

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Services - WORLD INTERNET USAGE AND POPULATION STATISTICS...

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