INTERNET SERVICESAuthor: Carlos Cajaraville Lojo. 3ºESO-A.
TYPES OF INTERNET SERVICES1. Websites.2. Electronic mail (e-mail).3. Discussion forums and newsgroups.4. Chats and video conferences.5. Instant messaging.6. Virtual communities.7. File transfer protocol (FTP).8. P2P file sharing.9. Photos.10. Biography.
WEB SITES. A website is a collection of related web pages. Aweb page is an HTML / XHTML file which isusually accessible via HTTP protocol Internet.All publicly accessible websites are a hugeWorld Wide Web of information.
ELECTRONIC MAIL (E-MAIL). E-mail (also known as email) is a networkservice that allows users to send and receivemessages and files quickly via electroniccommunication systems. In 1971, RayTomlinson incorporated the use of the at sign(@) as a divider between the user and thecomputer that hosts the mail.
DISCUSSION FORUMS AND NEWSGROUPS Forum: It is a web application which supportsonline discussions or opinions, allowing theusers to express their ideas or commentsregarding the subject matter. Newsgroups: They are a means ofcommunication within the Usenet system inwhich users read and send text messages tovarious boards distributed across servers withthe ability to send and reply to messages.
CHATS AND VIDEO CONFERENCES. Chat: A written communication made instantlyby using software and Internet betweentwo, three or more people, either publicly orprivately. Videoconference: A two-way, simultaneousaudio and video communication which allowsdifferent groups to hold meetings at places farapart. The core technology used in avideoconferencing system is digital compressionof audio and video streams in real time.
INSTANT MESSAGING Instant messaging is a form of real-timecommunication between two or more peoplebased on text. Instant messaging requires theuse of an instant messaging client that performsthe service and differs from e-mail. ICQ was thefirst instant messaging system for computerswith the operating system UNIX/LINUX inNovember 1996.
VIRTUAL COMMUNITIES A virtual community is a community whoselinks, interactions and relationships takeplace, not in a physical space, but in a virtualspace such as the Internet. The idea of virtualcommunities emerged in 1988 when it appearedonline.
FILE TRANSFER PROTOCOL A file transfer protocol is a convention orstandard that controls or enables the transfer offiles between two computers. The servers thatprovide a file transfer service are often calledfile servers.
P2P FILE SHARING File sharing is the act of distributing or providingaccess to digitally stored information, such assoftware, multimedia works, documents, orelectronic books. Some of the most commonmethods are manual distribution by usingremovable media (CD, DVD, floppydisks, magnetic tapes, flash), facilitiescentralized file servers on computernetworks, linked documents on the World WideWeb, and the use of distributed peer-to-peernetworking.