LSIS XBL-EIPT, Руководство пользователя, Страница: 110 / 123

Appendix
A-3
16. LAN (Local Area Network)
This network is a short distance network or an information communication network in region which enables a user to
connect a variety of computers in limited scope and to exchange data with each other.
17. MAC (Medium Access Control)
This term refers to the way of deciding which device will use network within given time In Broadcast Network.
18. Node
Each computer connected to network net is called “node,” respectively.
19. Packet
This is a bundle of data which becomes the basic unit for transmitting data via network. In general packet creates a
bundle in size from tens to hundreds BYTE. On the front side of each bundle Header is posted and the information on
which way this bundle to be sent and more information required are added.
20. PORT number
This number is an identifier used to classify applications on TCP/UDP. On TCP, this PORT number is used to decide to
which PORT data should be sent and the program used in general operation system has each own PORT.
Example) 21/tcp: Telnet
21. PPP (Point-to-Point Protocol)
This protocol is an agreement on telephone communication that allows packets to be transmitted. In other words, it is
the commonest protocol on internet that enables a computer to be connected to TCP/IP through general telephone
lines and modems.
This protocol is similar to SLIP, but it is equipped with modern – communication protocol factors such as error detection,
data compression, etc., so it displays excellent performances compared to SLIP.
22. Protocol
Protocol is the regulations on how computers connected to network transmit and receive information with each other.
Protocol means the regulation for exchanging messages on high level as the interface between one device and the
other device is specifically described on low level(For example, which BIT/BYTE should go through lines) or files are
transmitted through internet.