Web Science/Part1: Foundations of the web
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be able to name the ethernet header fields
be able to explain the reason for the preamble
understand that the cable length has an influence to transfer rate
understand that speed of light is responsible for the connection between cable length and transfer rate
be able to calculate the maximum cable length for a given transfer rate
understand that the cable length is part of the Ethernet protocol
Understand that Ethernet is a non deterministic program
Be able to reconstruct a collision detection / resolve algorithm
Understand what happens if two computers send data at the same time 
get introduced to the concept of an IP-network
understand that networks can be interconnected
learn about the importance for decentralization as a design principle
realize that Local area networks can be fragmented via IP networks
understand that an IP network as an overlay network is an abstract thing that is not directly reflecting the hardware settings
understand the notion of an IPv4 address and its components like network and host part
understand why MAC addresses do not fulfill the requirements of IP addresses.
get introduced to the notion of an IP router / gateway
review the definition and concept of an IP network
understand that IP routing works on the level of IP networks
understand the concept of subnetting
review network classes and understand classless inter domain routing.
get a feeling for the IP header
get a better understanding of how the protocol works
understand which header fields are changed while routing
understand which problems of IP will be solved with the transmition control protocol
be aware of the limitations of the internet protocol and the internet architecture
get to know the end to end principle and in which only sender and receiver take care that communication works properly
understand the concept of a logical connection (virtual communication channel) between two computers on the internet
understand the importance of acknowledging received messages
be able to understand the process of establishing a tcp / connection
understand the concept of a socket in a TCP/IP package
understand that ports are part of the TCP header
be able to explain the difference between solicited and unsolicited TCP/IP traffic
understand how ports can be used for multiplexing internet connections
understand the concept of windowsize and sliding window
understand how flow control can prevent TCP connections to overload link layer protocols and slow networks
In this lesson you will learn some basics on the Question: Why Web Content needs structure and proper markup.
Understand the Domain Object Model and the DOM tree
Understand that HTML is just a special dialect of XML
Understand the relationship between HTML and XML
Be able to write simple HTML code having learned a few example elements of HTML (headings, paragraphs, lists, tables, links, anchors, emphasize, input fields; but also few dirty ones like italics, color,...)
See that HTML really is just another simple mark up and has nothing to do with programming
Be able to structure web Content using HTML and create pages following a specified structure.
Know about the style attribute and how to use it within HTML elements
Know already realize that there are some limits using the style attribute
be able to create websites that follow a certain style guide
See the problems with inline styles
Understand that a style sheet gives you freedom
being able to explain people why they should use style sheets
be able to name at least 2 important point why to use style sheets
know how the cascading process works
know the basic syntax of cascading stylesheets
know how to include a media file like a graphic to your webpage.
understand that images like jpg, gif and bitmaps are hard for machines to understand.
Know how to use a XML based format to create images that are easy to understand for machines and humans an can even make use of stylesheets.
Understand that metadata is necessary to communicate the semantics of content
See that using metadata for ranking in search results is a bad idea
get introduced to modern ways of publishing media data as RDFa
Understand the separation between content, structure, layout and meta data
Review HTML, CSS, XML, SVG and RDFa
Understand what makes a clean HTML markup ("separation of concerns") vs. unclean one ("mixing responsibilities"); and implications (better or worse maintenance, better or worse personalization, better or worse accessibility)
become aware of the possibilities to create dynamic content within a webserver
see that you don't have to implement a webserver to be able to serve dynamic content
understand some main issues like blocking I/O that one should keep in mind when doing server side programming
see how the web server is the entry point for web applications
whitelisting of input vs blacklisting and a method of preventing XSS
understand the basics of HTTP POST requests
become aware of security issues while transfering data to a web server
be able to create a simple web form in HTML
See how a POST request is handled in a Java Servlet
get to know the Request object
see how a data base query and more advanced technology can be included to a servlet
understand how javascript was supposed to support people to fill out web forms
understand the issues and disadvantages that arise with javascript
be aware of JavaScript APIs
know some of the standard JavaScript libraries
be able to understand the concept of Ajax requests.
Web Science/Part1: Foundations of the web
Lezioni
- understand the basic problems when communicating over a shared medium
- understand the origins of ethernet
