This document provides an introduction to web technology. It discusses the history of the Internet and how it originated from the ARPANET network developed by the US Department of Defense in the 1960s to connect universities. It describes how TCP/IP protocols were created to allow communication across the Internet and defines common web-related terms like browsers, URLs, and the World Wide Web. It also distinguishes between static and dynamic websites.
Overview of the FTP protocol.
In the early days of the Internet, applications were mostly restricted to mail transfer (email) and file transfer. FTP (File Transfer Protocol) is one of the first standardized protocols for exchanging binary and text files between hosts.
FTP is rather simple in that it uses a TCP connection for exchanging commands and a data transfer TCP connection for the actual file transfer.
In normal FTP operation, the client opens the control connection to the FTP server while it is up to the server to open data connections for each file transfer. With the upcoming firewalls, this scheme proved to pose a problem since firewalls tend to block incoming TCP connections. Thus a passive mode was defined where the client is responsible to open the data connection to the server.
Overview of the FTP protocol.
In the early days of the Internet, applications were mostly restricted to mail transfer (email) and file transfer. FTP (File Transfer Protocol) is one of the first standardized protocols for exchanging binary and text files between hosts.
FTP is rather simple in that it uses a TCP connection for exchanging commands and a data transfer TCP connection for the actual file transfer.
In normal FTP operation, the client opens the control connection to the FTP server while it is up to the server to open data connections for each file transfer. With the upcoming firewalls, this scheme proved to pose a problem since firewalls tend to block incoming TCP connections. Thus a passive mode was defined where the client is responsible to open the data connection to the server.
Internet Cookies presentation contains-
What is internet cookies?
Who can see this cookies?
How does it look like?
History
Types
Uses
Limitations
Disadvantages
Internet Cookies presentation contains-
What is internet cookies?
Who can see this cookies?
How does it look like?
History
Types
Uses
Limitations
Disadvantages
Episode 3(3): Birth & explosion of the World Wide Web - Meetup session11William Hall
This is the 11th of of 23 presentations in a series introducing and outlining my hypertext book project, "Application Holy Wars or a New Reformation - A Fugue on the Theory of Knowledge. The project explores the interactions of technology and cognition in the extraordinary evolutionary history of the human species. In presentation I show how a universally accessible library for the body of human knowledge emerged from what started as defense projects to interconnect various projects so they could share computer resources and to harden digital communications against nuclear warfare. Tonight's topics cover:
● ARPANET and the invention of addressable digital communications
● Vannevar Bush, Memex, and the revolutionary invention of hypertext
● Revolutionary tools for authoring, managing, and delivering hypertext
● Exponential growth of the web and web content
● Using the Web's automated cognition for assembling and retrieving relevant knowledge
What is internet?
History of internet,Client and server,how data transfer from sender to receiver through internet,Terminology of WWW
FOR DOWNLOAD PDF:
https://computerassignmentsforu.blogspot.com/p/classixinternet.html
VIDEO TUTORIAL:
https://youtu.be/dLlDcXhwwFQ
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
2. Introduction
The Internet and the World Wide Web
History of the Internet and the WWW Transmission
Across the Internet
TCP/IP and Domain Names
Basic Services from FTP to the WWW
Uniform Resource Locators (URLs) – Intranets and
Extranets
3. Introdcution
The Internet is a global network of networks that
enables computers of all kinds to directly and
transparently communicate and share services
throughout the world.
The InterNet is short for….
INTERconnected NETwork
4. The Internet
The Internet is a giant network of networks
A network may include PCs, and other devices like
servers or printers
A network is connected through a communication
channel
Early research was performed by the US Department
of Defense in 1962. This research group established
ARPAnet (Advanced Research Project Agency) in order
to connect the US Defense Department network 1
5. What did the Internet come
from?
Original aim was to create a network that would allow
users of a research computer at one university to be
able to ‘talk to’ research computers at other
universities.
A side benefit of ARPAnet’s design was that, because
messages could be routed or rerouted in more than
one direction, the network could continue to function
even if parts of it were destroyed in the event of a
military attack or other disaster.
The users of the Internet took a direction of their own
6. History of the Internet
The first long distance communication took place in
1965 between a computer in MIT and California.
In 1969, four computers clients were connected
together via ARPAnet. – How old is the Internet?
Leonard Kleinrock is accredited with the idea of packet
switching, which describes how data can be sent
across a network
7. History of the Internet
The ethernet was developed by Xerox during this
period. This was inspired by Robert Metcalfe’s PhD on
‘packet networks’.
An ethernet is a protocol for describing how
computers can be connected in a LAN (Local Area
Network)
Through the use of Ethernet and ARPAnet the US were
able to develop a working network
In the late 1970s and early 1980s other networks were
developed, e.g. CSNET, USNET and BITNET
8. History of the Internet
In 1973 Vint Cerf and Bob Kahn created the TCP/IP
communication protocols
TCP/IP: Transfer Control Protocol/Internet Protocol is
a set of rules that describe how computers can
communicate over a network
To send information over the Internet, a computer
packs data into Internet Protocol (IP) packets and
labels them with the correct address. They are then
sent across a packet switched interconnected network
9. How do we use the Internet?
Email
WWW
Hypertext
browsers
RSS
FTP,
P2P
file distribution
Mobile Internet
IM,
IRC,
Skype
Blogging,
microblogging
Gaming
Learning
Video Conferencing
Remote Backup
Streaming video and audio
Collaboration-Participation
(Wiki)
Collaborative tagging
Software over the web
Rich User Experiences
Social networks • Business and
finance
10. Browsers
An application that provides a way to look at and
interact with the information on the World Wide Web
It retrieves, presents, and traverses information
resources
These include web pages, images, video, and other
multimedia content
11.
12.
13. World Wide Web (WWW)
The World Wide Web allows computer users to locate and view
multimedia-based documents (i.e., documents with text, graphics,
animations, audios or videos) on almost any subject.
Even though the Internet was developed more than three decades
ago, the introduction of the World Wide Web is a relatively recent
event. In 1990, Tim Berners-Lee of CERN (the European
Laboratory for Particle Physics) developed the World Wide Web and
several communication protocols that form the backbone of the
Web.
The Internet and the World Wide Web surely will be listed among
the most important and profound creations of humankind.
In the past, most computer applications executed on “stand-alone”
computers (i.e., computers that were not connected to one another).
The W3C is also a standardization organization
14. Web Contents
Web content is the textual, visual or aural content that
is encountered as part of the user experience on
websites.
It may include, among other things: text, images,
sounds, videos and animations
15. HTML web content
Even though we may embed various protocols within web pages,
the "web page" composed of "html" (or some variation) content
is still the dominant way whereby we share content. And while
there are many web pages with localized proprietary structure
(most usually, business websites), many millions of websites
abound that are structured according to a common core idea.
A web search engine is designed to search for information on
the World Wide Web.
The search results are generally presented in a list of results and
are often called hits
The information may consist of web pages, images, information
and other types of files. Some search engines also mine data
available in databases or open directories.
Unlike Web directories, which are maintained by human editors,
search engines operate algorithmically or are a mixture of
algorithmic and human input.
17. Static Web Site
A static web page (sometimes called a flat page) is a web
page that is delivered to the user exactly as stored.
Dynamic web pages which are generated by a web
application
Consequently a static web page displays the same
information for all users, from all contexts, subject to
modern capabilities of a web server to negotiate content-
type or language of the document where such versions
are available and the server is configured to do so.
Static web pages are often HTML documents stored as
files in the file system and made available by the web
server over HTTP.
18. Static Web Site
However, loose interpretations of the term could
include web pages stored in a database, and could
even include pages formatted using a template and
served through an application server, as long as the
page served is unchanging and presented essentially
as stored.
Static Web pages are very simple in layout and
informative in context. Creation of static website
content requires great level of technical expertise and
if a site owner is intended to create static
web pages, they must be very clear with their ideas of
creating such pages since they need to hire a web
designer.
19. Advantages
No programming skills are required to create a static
page.
Inherently publicly cacheable (i.e. a cached copy can be
shown to anyone).
No particular hosting requirements are necessary.
Can be viewed directly by a web browser without
needing a web server or application server, for
example directly from a CDROM or USB Drive.
20. Disadvantages
Any personalization or interactivity has to run client-
side (ie. In the browser), which is restricting.
Maintaining large numbers of static pages as files can
be impractical without automated tools .
21. Application areas of Static
Website:
Need of Static web pages arise in the following cases.
Changes to web content is infrequent
List of products / services offered is limited Simple e-
mail based ordering system should suffice
No advanced online ordering facility is required
Features like order tracking, verifying availability of
stock, online credit card transactions, are not needed
Web site not required to be connected to back-end
system