1.2. Used terminology
•Ethernet is a family of frame-based computer networkin technolo ies for
local area networks (LANs
•LAN - a local area network (LAN) is a computer network coverin a small
physical area, like a home, office, or small roups of buildin s, such as a
school, or an airport.
•10Base-T - 10 Mbit/s , it uses 8 position modular connectors, usually called
RJ45 in the context of Ethernet over twisted pair. The cables usually used are
four-pair twisted pair cable (thou h 10BASE-T and 100BASE-TX only actually
require two of the pairs). Each of the standards support both full-duplex and
half-duplex communication. Accordin to the standards, they all operate
over distances of up to 100 meters.
•100Base-TX - so called Fast Ethernet, two pairs of UTP or STP cable, cate ory
5.
•Twisted pair cabling is a type of wirin in which two conductors (the forward
and return conductors of a sin le circuit) are twisted to ether for the
purposes of cancelin out electroma netic interference (EMI) from external
sources; for instance, electroma netic radiation from unshielded twisted pair
(UTP) cables, and crosstalk between nei hborin pairs.
•UTP, Unshielded Twisted Pair
•STP,Shielded Twisted Pair - the cablin includes metal shieldin over each
individual pair of copper wires. This type of shieldin protects cable from
external EMI (electroma netic interferences).
•WEB - World Wide Web (WWW, or web) - a world-wide application of HTTP
internet protocol
•HTTP (Hypertext Transfer Protocol) is an internet protocol used ori inally for
exchan in hypertext documents in HTML format.
•USB (Universal Serial Bus) - modern way of connectin external devices to
the computer.
•Video codek ("coder and decoder") - compression H.263 is derived from
MPEG-4, H.264 is a coder for MPEG-4 AVC format. MPEG-4 is a type of video
compression - decreasin of data stream video sequence
•JPEG is a standard method of loss compression used for savin di ital ima es
•Voice over Internet Protocol (VoIP) is a technolo y enablin transmission of
di italised voice inside the packej of protocols family UDP/TCP/IP via
computer network. I tis used for makin phone calls via Internet, Intranet or
any other kind of data connection
•TCP/IP contains a set of protocols for communication in the computer
network and it is the main protocol of Internet