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Observe Yourself or -5. Turn off communication devices. Dress properly. Module10 Internet application. Internet Application. Remote access (Terminal emulation) Telnet File transfer FTP Communication & Sharing data E-mail & Mailing List Instant Messaging Discussion group Newsgroup

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observe yourself or 5
Observe Yourself or -5
  • Turn off communication devices
  • Dress properly
internet application
Internet Application
  • Remote access (Terminal emulation)
    • Telnet
  • File transfer
    • FTP
  • Communication & Sharing data
    • E-mail & Mailing List
    • Instant Messaging
    • Discussion group
    • Newsgroup
    • Video Conference
  • Search
    • Search Engine
  • Portal
  • E-Commerce

A program that allows users to connect to remote computers to control, manage account space, check email, etc.

file transfer protocol ftp
File Transfer Protocol (FTP)
  • FTP is a protocol used to transfer files from one computer to another through a network
  • a method whereby you can connect to a remote computer called an FTP site and transfer files to your own microcomputer’s hard disk.

RJ-45's are 8-wire and meant for LAN.

  • RJ-11's are 6-wire, smaller, and meant for phone.
telephone system
Telephone System

Conventional Phone

Internet Telephony

  • Public Switched Telephone Network (PSTN) uses
  • Communication occurs by dedicated connecting circuit between two points duration the call.
  • It uses
  • Voice travels by Individual packets may take different paths to the same place.
two systems for conventional phone
Two Systems for Conventional Phone
  • PSTN (public network)
  • PBX (private network)
  • Private Branch Exchange (PBXs)
    • Private telephone switching system that connects telephone extension in house or office and connect them to public switched telephone network (PSTN)
  • Voice over Internet Protocol (VoIP, Voice over IP) is a general term for a family of methodologies, communication protocols, and transmission technologies for delivery of voice communications and multimedia sessions
  • Other terms frequently encountered and synonymous with VoIP are
    • IP phone
    • IP telephony
    • Internet telephony
    • Internet phone
    • voice over broadband (VoBB),
    • broadband telephony, and
    • broadband phone.
internet telephony
Internet Telephony

Or VoIP phone (Voice over Internet Protocol): using the Internet to make phone calls, either one-to-one or for audio-conferencing.

Example of s/w :

  • Skype
  • Fringe
  • Microsoft NetMeeting
advantage and disadvantage of voip
Advantage and Disadvantage of VoIP



  • Low cost
    • PC to PC phone calls anywhere in the world for free.
    • PC to Phone has a charge but much cheaper than regular phone.
  • No service during a power outage
  • Quality and Reliability
    • VOIP relies on quality of Internet connection. Poor Internet connection and congestion can result in poor voice quality, such as clipping, voice delay, or dropped calls.
  • It is a set of interactive telecommunicationtechnologies which allow two or more locations to interact via two-way video and audio transmissions simultaneously. It has also been called 'visual collaboration' and is a type of groupware.
  • Electronic mail, email or e-mail
  • It is a method of exchanging digital messages across the Internet.
e mail addresses
E-Mail Addresses


User name: mvickers

Domain name: sales.abc

Top-level domain: .com

  • Snail + Mail
spam unwanted junk e mail
Spam: Unwanted Junk E-Mail
  • Delete without opening the message
  • Never reply to a spam message!
  • Enlist the help of your ISP or use spam filters
mailing lists
Mailing Lists
  • E-Mail-Based Discussion Groups
  • A listserv is an automatic mailing-list server that sends email to subscribers who regularly participate in discussion topics.
  • Newsgroup - a giant electronic bulletin board on which users conduct written discussions about a specific subject.
instant messaging
Instant Messaging

Allows any user on a given e-mail system to send a message and have it pop up instantly on the screen of anyone else logged onto that system

  • Or web log, a diary-style web page.
  • Keeping journals which are accessible to other users.
  • Blogs are often updated daily and reflect the personality and views of the blogger.
  • EX:Blog
social network1
Social Network
  • A social network is a social structure made up of individuals (or organizations) called "nodes," which are tied (connected) by one or more specific types of interdependency, such as friendship, kinship, common interest, financial exchange, dislike, sexual relationships, or relationships of beliefs, knowledge or prestige.

Facebook was born in the year 2004 by three Harvard University students

    • Mark Zuckerberg
    • Dustin Moskovitz
    • Chris Huges
  • Its purpose is to put students in touch with one another, share their photos and meet new people.
  • The site has grown from Zuckerburg's vision of connecting the Harvard campus to connecting users across the Internet.

There are a huge number of web site around the world.

  • How do we search information on the Internet?
web directory book style
Web Directory (Book Style)
  • List Urls by web site category.
    • The categorization is based on the whole web site.
    • Do not index the contents of web sites.
    • Updating cycle is slow because printing process takes time. This makes web directory book out of date.
web directory online style
Web Directory (Online Style)
  • It allows you to search for information by selecting lists of categories or topics, such as “Business and Commerce” or “Arts and Humanities.”
  • Updating a new web site can do online. Hence, directory is up-to-date.
  • Manual categorization.
keyword search
Keyword Search
  • A keyword search allows you to search for information by typing one or more keywords, and the search engine then displays a list of web pages, or “hits”, that contain those key words.
search engine
Search Engine
  • It is a program that enable you to ask questions or use keywords to help locate information on the web.
  • Search engines are huge catalogs of Web sites that let you find specific Web pages. By entering keywords.
  • Search engine will return a list of relevant documents and their links.
  • The more information you can provide in your search criteria, the more accurate the results a search engine will return.
how search service gathers information
How search service gathers information?
  • Human-organized search sites
  • Computer-created search sites
human organized search sites
Human-organized search sites
  • Based on human judgement
  • Whereas computers can’t discriminate in organizing data, humans can judge data for relevance and categorize items in ways that are useful to you.
computer created search sites
Computer-created search sites
  • Use “spiders” that crawl all over the web and send back reports to be collected and organized with little human intervention.
  • Google ranks listings by popularity as well as by how well they match the request.
  • Some search engines rank results of a search according to who paid the most money for top billing
how search engine gathers information
How Search Engine gathers information?
  • To find information of the millions of Web pages, a search engine uses special software robots, called
  • It crawls through the web by
  • When a spider is building its lists, the process is called
web portal
Web portal
  • It is a type of gateway website, offer a broad array of resources and services.
  • Website that groups together in one convenient location popular features such as search tools, e-mail, electronic commerce, and discussion groups, news, weather, travel information, links to other popular subject categories.
  • "Really Simple Syndication” is used to publish frequently updated content such as blog entries, news headlines in a standardized format.
  • Web sites include links to RSS feeds, typically identified with an XML or RSS button
rss feeds on msnbc com
RSS Feeds on msnbc.com