Information Technology Reference
In-Depth Information
2.3.1.2 File Transfer Protocol (FTP)
The File Transfer Protocol, or FTP, was one of the first services offered on
the Internet. Its primary functions are to allow a user to download a file
from a remote site to the user's computer and to upload a file from the user's
computer to a remote site. These files could contain data, such as numbers,
text, or images, or executable computer programs. Although the WWW has
become the major vehicle for retrieving text- and image-based documents,
many organizations still find it useful to create an FTP repository of data
and program files.
2.3.1.3 Remote Log-In (Telnet)
Remote log-in, or Telnet, is a terminal emulation program for TCP/IP net-
works, such as the Internet, that allows users to log in to a remote computer.
The Telnet program runs on your computer and connects your workstation
to a remote server on the Internet. Once you are connected to the remote
server or host, you can enter commands through the Telnet program, and
those commands will be executed as if you were entering them directly at
the terminal of the remote computer.
2.3.1.4 Voice-Over-IP
One of the newer services that is attracting the interest of companies and
home users alike is the sending of voice signals over an IP-based network
such as the Internet. The practice of making telephone calls over the Internet
has had a number of different names, including packet voice, voice-over
packet, voice over the Internet, Internet telephony, and Voice-over-IP (VoIP).
But it appears the industry has settled on the term Voice over IP , in refer-
ence to the Internet Protocol (IP), which controls the transfer of data over the
Internet. Whatever its title, Voice over IP has emerged as one of the hottest
Internet services and has certainly drawn the attention of many companies.
2.3.1.5 Listservs
A listserv is a popular software program used to create and manage Internet
mailing lists. Listserv software maintains a table of e-mail addresses that
reflects the current members of the listserv. When an individual sends an
e-mail to the listserv address, the listserv sends a copy of this e-mail message
to every e-mail address stored in the listserv table. Thus, every member of
the listserv receives the e-mail message.
2.3.1.6 Streaming Audio and Video
Streaming audio and video involves the continuous download of a com-
pressed audio or video file, which can then be heard or viewed on the user's
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