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Internet and E-mail

Internet Interconnectivity Requirements

By the end of the lesson you should be able to:

  • Describe various internet connectivity requirements

  • Data Terminal Equipment(DTE) : Are devices that transform the user input into a digital signal and back to analogue signal
  • Transmission media: are physical or wireless channels used to transmit data and information from one point to another
  • Telecommunication cables: modems are used to dial up a remote computer via a telephone line to connect to the internet. Modems stand for Modulator Demodulator. A modem modulates(converts) outgoing digital signals to analog forms for transmission on the copper cable
  • satellite transmission : 
  • internet service provider
  • software e.g Internet protocol, browser, e-mail client. Internet Protocol defines the format of packets and provides an addressing system. The Internet Protocol just delivers them. It's up to another protocol, the Transmission Control Protocol (TCP) to put them back in the right order.
  • wireless telecommunication: Mobile telecommunication Industry uses Global System for Mobile Communication(GSM)
  • GSM uses various technologies to connect mobile devices wirelessly e.g  General Packet Radio Service(GPRS), LTE,EDGE ,and UTMS

Definition of Terms used in Internet

By the end of the lesson you should be able to:

  • State and explain the meaning of various internet terminologies:

Define the following terms used in the Internet

  • Internet - refers to a global interconnection of computer networks for communication and resource sharing.
  • World Wide Web - refers to a virtual network of websites connected by hyperlinks.
  • HTML - This is a markup language used to create web pages
  • What is HTML in full? - Hypertext Markup Language
  • Website -  a collection of web pages that are linked together by hyperlinks
  • Web Browser - refers to application software that is used to view webpages stored on the web servers by typing web address/ URL on its address bar.
  • HTTP - refers to the protocol used by a web browser to request and receive web pages from the web servers
  • What is HTTP in full? - refers  Hypertext Transfer Protocol
  • Blog - refers to a special type of web sites containing information that can be edited and updated regularly by users
  • Web Portal: refers to the websites dedicated to performing specialized services e.g student portal of a university website
  • Network Interface Card - a piece of hardware that allows computers connected to a network to communicate