LSIS XBL-EIPT, User Manual, Page: 109 / 123

Appendix
A-2
The end letters in domain name are top-ranked ones, and in case of USA, the following abbreviation is mostly used and
in case of Korea, Korea is expressed in .kr for displaying nationality:
.com: usually corporations (company) / .edu: usually educational institutions like university (education). / .ac (academy)
used in Korea, / .gov: governmental institutions, for example, NASA - nasa.gov (government) / .mil: sites related to the
military. For example, USA air force is “to af.mil, (military)”/ .org means private organizations. Nations are expressed as
follows: (/ .au: Australia / .uk: England / .ca: Canade / .kr: Korea / .jp: Japan / .fr: France / .tw: Taiwan, etc.).
9. Ethernet
This net is LAN Connection System (IEEE 802.3) that USA (Xerox), Intel, and DEC jointly developed. Ethernet, a
network connection with 10Mbps transmission ability and 1500 BYTE packet used, can collect a variety of computers in
network. Thus, it is called “pronoun of LAN” and the diverse products in generality in size, not for special providers, have
been launched.
10. Gateway
This part is software/hardware translating two different protocols and is the device corresponding to the exit enabling a
user to exchange information with other systems.
11. Header
This device is the part of the packet including own country’s and an opponent country’s addresses, and the part for
checking out errors.
12. ICMP (Internet Control Message Protocol)
This protocol creates error messages and test packets for managing internet via extension protocol of IP address and is
designed to report errors and take control.
13. IP (Internet Protocol)
This protocol is deigned for network layers for internet. This is the protocol in non-connective datagram which transmits
and receives data as data like TCP, UDP, ICMP, IGMP uses IP (32BYTE).
14. IP Address
This term means the address on internet in each computer composed of numbers and this address consists of
binary
numbers in 32BYTE (4BYTE) size to classify each device on internet. IP address is divided into 2 parts in total and is
composed of address for classifying network and host address for dividing hosts. IP address is classified into 3 classes -
(Class) A/ B/ C – according to how many BYTES are allotted to network address and host address. IP address is unique
one over the world, so it is not decided at discretion but NIC (Network Information Center), the regional information net
center allots when subscribing to internet, and In case of Korea, KRNIC (Korea Network Center) is in charge of allotment.
Example) 165,244.149.190
15. ISO (International Organization for Standardization)
This organization is a subsidiary under UN established to enact international standards and to carry out management.