Crestron
e-Control
®
Software
Firmware
- Programming that is inserted into programmable read-only memory, thus
becoming a permanent part of a computing device.
Fragmentation
- Breaking a packet into smaller units when transmitting over a
network medium that cannot support the original size of the packet.
FTP
(
F
ile
T
ransfer
P
rotocol) - A protocol used to transfer files over a TCP/IP network
(Internet, UNIX, etc.). For example, after developing the HTML pages for a website on
a local machine, they are typically uploaded to the Web server using FTP.
FTP includes functions to log onto the network, list directories, and copy files. It can
also convert between the ASCII and EBCDIC character codes. FTP operations can be
performed by typing commands at a command prompt or via an FTP utility running
under a graphical interface such as Windows. FTP transfers can also be initiated from
within a Web browser by entering the URL preceded with ftp://.
Unlike e-mail programs in which graphics and program files have to be “attached,”
FTP is designed to handle binary files directly and does not add the overhead of
encoding and decoding the data.
Full Duplex
- The ability of a device or line to transmit data simultaneously in both
directions.
Gateway
– A device that interconnects networks with different, incompatible
communications protocols.
Half Duplex
- Data transmission that can occur in two directions over a single line, but
only one direction at a time.
Hardware
- Hardware is the physical aspect of computers, telecommunications, and
other information technology devices. The term arose as a way to distinguish the “box”
and the electronic circuitry and components of a computer from the program you put in
it to make it do things. The program came to be known as the software.
Hub
- The device that serves as the central location for attaching wires from
workstations. Can be passive, where there is no amplification of the signals; or active,
where the hubs are used like repeaters to provide an extension of the cable that
connects to a workstation.
IEEE
- The Institute of Electrical and Electronics Engineers. The IEEE describes itself
as “the world's largest technical professional society—promoting the development and
application of electro technology and allied sciences for the benefit of humanity, the
advancement of the profession, and the well-being of our members.”
The IEEE fosters the development of standards that often become national and
international standards. The organization publishes a number of journals, has many
local chapters, and has several large societies in special areas, such as the IEEE
Computer Society.
IP Address
- In the most widely installed level of the Internet Protocol (Internet
Protocol) today, an IP address is a 32-binary digit number that identifies each sender or
receiver of information that is sent in packets across the Internet. When you request an
HTML page or send e-mail, the Internet Protocol part of TCP/IP includes your IP
address in the message (actually, in each of the packets if more than one is required).
The message is sent to the IP address that is obtained by looking up the domain name
in the Uniform Resource Locator you requested or in the e-mail address of the note’s
recipient. At the other end, the recipient can see the IP address of the Web page
Reference Guide – DOC. 6052
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