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Term Explanation
MAC Address (Media Access Control Address)
Unique code assigned to network interface cards.
Transmission and reception of data is made via the Ethernet using this unique
address.
Netmask Refer to "Subnet Mask".
Post-Alarm VMD after an alarm is detected.
Pre-Alarm VMD before an alarm is detected.
Proxy Server The server used to improve the performance between networks by diminish-
ing unnecessary traffic caused by caching, or strengthening the security
between the PC and the Internet.
Router The device used to relay data on one network to another network.
Routers use IP addresses to determine where data should go.
SMTP (Simple Mail Transfer Protocol)The protocol used to send e-mails on the Internet or an intranet. This protocol
controls the exchange of e-mails between two mail servers, or is used when
clients send e-mails to the server.
SNMP (Simple Network Management Protocol)
The protocol used to monitor devices connected to TCP/IP networks such as
the Internet or an intranet.
The SNMP manager is used to monitor the status of an Ethernet switching
hub/router and the traffic of the network.
Straight Cable The cable designed for 10Base-T / 100Base-TX and used to connect a PC to
an Ethernet hub.
Subnet Mask An IP address has two components: the network address and the host
address.
The subnet mask is used to determine what subnet an IP address belongs to.
TCP / IP (Transmission Control Protocol / Internet Protocol)
The basic protocol on the Internet, and currently the most common protocol.
This network protocol was developed by the network project financially sup-
ported by the U.S. Department Of Defense.
Web Browser Software to browse the web.
Most commonly used browsers are Internet Explorer of Microsoft or Netscape
Communicator of Netscape Communications Corporation, etc.
xDSL Modem The device used for high-speed digital data transmission over the phone line.
xDSL is the generic name for technologies such as ADSL, RADSL, HDSL,
and VDSL.