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Appendix D: Glossary
24-Port 10/100/1000 Gigabit Switch with Webview and PoE
Flow Control - Enables lower speed devices to communicate with higher speed devices. This is implemented by
the higher speed device refraining from sending packets.
FTP (File Transfer Protocol) - A protocol used to transfer files over a TCP/IP network.
Full Duplex - The ability of a networking device to receive and transmit data simultaneously.
GARP (General Attributes Registration Protocol) - Registers client stations into a multicast domain.
Gateway - A device that interconnects networks with different, incompatible communications protocols.
GBIC (GigaBit Interface Converter) - A hardware module used to attach network devices to fiber-based
transmission systems. GBIC converts the serial electrical signals to serial optical signals and vice versa.
GVRP (GARP VLAN Registration Protocol) - Registers client stations into a VLANs.
Half Duplex - Data transmission that can occur in two directions over a single line, but only one direction at a
time.
HTTP (HyperText Transport Protocol) - The communications protocol used to connect to servers on the World
Wide Web.
HTTPS (HyperText Transport Protocol Secure) - An extension to the standard HTTP protocol that provides
confidentiality by encrypting the traffic from the website. By default this protocol uses TCP port 443.
ICMP (Internet Control Message Protocol) - Allows the gateway or destination host to communicate with the
source host. For example, to report a processing error.
IGMP (Internet Group Management Protocol) - Allows hosts to notify their local switch or router that they want to
receive transmissions assigned to a specific multicast group.
IP (Internet
Protocol) - A protocol used to send data over a network.
IP Address - The address used to identify a computer or device on a network.
IPCONFIG - A Windows 2000 and XP utility that displays the IP address for a particular networking device.
IPSec (Internet Protocol Security) - A VPN protocol used to implement secure exchange of packets at the IP layer.
ISP (Internet Service Provider) - A company that provides access to the Internet.
Jumbo Frames - Enable transporting identical data in fewer frames. Jumbo Frames reduce overhead, lower
processing time, and ensure fewer interrupts.
LAG (Link Aggregated Group) - Aggregates ports or VLANs into a single virtual port or VLAN.
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