Tuesday, 29 May 2012

HTML 5th Note

HTML = Hyper Text Multimedia languange

  • HTML is not a programming language, it is a markup language
  • A markup language is a set of markup tags
  • The purpose of the tags are to describe page content 
  • HTML Tags

    HTML markup tags are usually called HTML tags
  • HTML tags are keywords (tag names) surrounded by angle brackets like <html>
  • HTML tags normally come in pairs like <b> and </b>
  • The first tag in a pair is the start tag, the second tag is the end tag
  • The end tag is written like the start tag, with a forward slash before the tag name
  • Start and end tags are also called opening tags and closing tags

HTML Elements

"HTML tags" and "HTML elements" are often used to describe the same thing.
But strictly speaking, an HTML element is everything between the start tag and the end tag, including the tags:
HTML Element:
<p>This is a paragraph.</p>

HTML Documents = Web Pages

  • HTML documents describe web pages
  • HTML documents contain HTML tags and plain text
  • HTML documents are also called web pages
1st level- head body and
2nd level-  Tittles, meta data, divisions, paragraphs, forms and heading
3rd level-  tables, rows, data cell

Sunday, 20 May 2012

6th Note


The physical topology of a network refers to the configuration of cables, computers, and other peripherals. Physical topology should not be confused with logical topology which is the method used to pass information between workstations. Logical topology was discussed in the Protocol chapter.

Types of Topology

  • Linear Bus
  • Star
  • Tree (Expanded Star) 

Linear Bus

A linear bus topology consists of a main run of cable with a terminator at each end

Advantages of a Linear Bus Topology
  • Easy to connect a computer or peripheral to a linear bus.
  • Requires less cable length than a star topology.
Disadvantages of a Linear Bus Topology
  • Entire network shuts down if there is a break in the main cable.
  • Terminators are required at both ends of the backbone cable.
  • Difficult to identify the problem if the entire network shuts down.
  • Not meant to be used as a stand-alone solution in a large building. 


A star topology is designed with each node (file server, workstations, and peripherals) connected directly to a central network hub, switch, or concentrator 

Data on a star network passes through the hub, switch, or concentrator before continuing to its destination. The hub, switch, or concentrator manages and controls all functions of the network. It also acts as a repeater for the data flow. This configuration is common with twisted pair cable; however, it can also be used with coaxial cable or fiber optic cable.

Advantages of a Star Topology
  • Easy to install and wire.
  • No disruptions to the network when connecting or removing devices.
  • Easy to detect faults and to remove parts.
Disadvantages of a Star Topology
  • Requires more cable length than a linear topology.
  • If the hub, switch, or concentrator fails, nodes attached are disabled.
  • More expensive than linear bus topologies because of the cost of the hubs, etc.

 Tree or expended star

A tree topology combines characteristics of linear bus and star topologies. It consists of groups of star-configured workstations connected to a linear bus backbone cable . Tree topologies allow for the expansion of an existing network, and enable schools to configure a network to meet their needs.

Advantages of a Tree Topology
  • Point-to-point wiring for individual segments.
  • Supported by several hardware and software venders.
Disadvantages of a Tree Topology
  • Overall length of each segment is limited by the type of cabling used.
  • If the backbone line breaks, the entire segment goes down.
  • More difficult to configure and wire than other topologies.

Tuesday, 1 May 2012

Social Apps!! 4th note

 Kyaa~ last week is the best telecom class evr. I've learnt a lot about intersting apps tht I never knew exist b4.. some of 'em are beneficial and all n some are just cute! 
Basically social software applications include communication tools and interactive tools. They are all over the web n have various kinds and usage/purpose. 

Lil' Mistress

Mr. Rabbit: 

so, little Mistress and her friends had a presentation for Social Applications and here's the two tht they presented..


Glog = Graphical blog. Simply put Glogster is a social network that allows users to create free interactive posters, or glogs. Glogster provides an environment to design interactive posters. The user inserts text, images, photos, audio (MP3), videos, special effects and other elements into their glogs to generate a multimedia online creation. Its free for individuals registrations.
However, there Glogster also provide services to teachers world wide to utilize extra function with fees that is reasonable and affordable. It is called Glogster Edu.

Here's an image of what u can do on Glogster.

Next let us move on to the 2nd application.

 Animoto is a web application that produces videos from photos, video clips and music. Using this online apps we can create interesting videos similar to a trailer according to our own creativity. It fun and simple to use. We can register for free and start getting our brains into gear to create awesome vids! 

Here's a screen capture of how u start to create ur vids  by choosing the image u gonna use.


That is it for last week's class. Comments and suggestions are loved. ^w^