1.2. Used terminology
• Ethernet is a family of frame-based computer networking technologies for
local area networks (LANs
• LAN - a local area network (LAN) is a computer network covering a small
physical area, like a home, office, or small groups of buildings, 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 (though 10BASE-T and 100BASE-TX only actually
require two of the pairs). Each of the standards support both full-duplex and
half-duplex communication. According 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, category
5.
• Twisted pair cabling is a type of wiring in which two conductors (the forward
and return conductors of a single circuit) are twisted together for the
purposes of canceling out electromagnetic interference (EMI) from external
sources; for instance, electromagnetic radiation from unshielded twisted pair
(UTP) cables, and crosstalk between neighboring pairs.
• UTP, Unshielded Twisted Pair
• STP,Shielded Twisted Pair - the cabling includes metal shielding over each
individual pair of copper wires. This type of shielding protects cable from
external EMI (electromagnetic 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 originally for
exchanging hypertext documents in HTML format.
• USB (Universal Serial Bus) - modern way of connecting 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 - decreasing of data stream video sequence
• JPEG is a standard method of loss compression used for saving digital images
• Voice over Internet Protocol (VoIP) is a technology enabling transmission of
digitalised voice inside the packej of protocols family UDP/TCP/IP via
computer network. I tis used for making 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
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