S2W8 Wednesday: Quake, Facebook Truth, Piracy, Password. Professor Teaches

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1. The Quake & the Net

The net continues to play a decisive role in post-quake Japan. Many residents returned home on Friday to find their houses without gas, electricity and phone lines, however, the Internet was still working and people used it and portable radios to keep up to date with unfolding events:

 The role of the web in the Japan disaster

Japan Earthquake: Internet a Communications Lifeline as Telephone Lines Fail

Japan's Internet largely intact after earthquake, tsunami

Twitter, Facebook become lifelines after Japan quake

 

Some of the repercussions of the quake will be felt globally such as in the stock markets or certain products which Japan specialises in, for example, memory chips:

Memory chip prices surge in aftermath of Japan's quake 

Meanwhile, the situation at the reactors has gone from bad to wors:

Japan officials: Stay indoors, nuclear leaks now dangerous

Before and After Pictures:


http://www.abc.net.au/news/events/japan-quake-2011/beforeafter.htm


Wave animation:

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2. IP Port Review

Understanding conceptually the way computers communicate is crucial to understanding how our global network was conctructed. Each layer of complexity has built on the next to allow what you experience today - an essentially seamless experience of multimedia web browsing tand the automation of complex technical tasks via the Internet, for example, video conferencing, mass online gaming, etc. All of this is made possible by the infinitely flexible architecture of the Intenet. It is important to remember that this, the most complex technical creation ever made by man, was designed to be redundant, inefficient and allow for unreliable communications.

Review this article again briefly:

 The TCP/IP Protocol Stack

 Here is the list of all the TCP and UDP port numbers:

List of TCP and UDP port numbers

and here is the list of network protocols

List of network protocols

Today I'd like us to review the TCP and UDP ports. I'd also like you to choose a network protocol and write a brief comment on what it does. One example is the port for DNS (Domain Naming Service) is port 53. It functions roughly as outlined below:

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3. Professor Teaches HTML

  

We will do a brief quiz today on the Professor Teaches HTML Advanced More Advanced Techniques. Please work through the chapter. We will do the quiz once everyone is finished the chapter. Questions will be drawn solely from the content of Chapter on More Advanced Techniques.

 
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4. Gaming

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5. Life Lessons

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