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Chapter 7 - Glossary
Ethernet
The most commonly installed computer network
technology, usually using twisted pair wiring. Ethernet data
rates are 10 Mbps and 100 Mbps. See also 10BASE-T,
100BASE-T, twisted pair.
FTP
File Transfer Protocol
A program used to transfer files between computers
connected to the Internet. Common uses include uploading
new or updated files to a web server, and downloading files
from a web server.
host
A device (usually a computer) connected to a network.
ICMP
Internet Control Message Protocol
An Internet protocol used to report errors and other
network-related information. The ping command makes
use of ICMP.
IGMP
Internet Group Management Protocol
An Internet protocol that enables a computer to share
information about its membership in multicast groups with
adjacent routers. A multicast group of computers is one
whose members have designated as interested in receiving
specific content from the others. Multicasting to an IGMP
group can be used to simultaneously update the address
books of a group of mobile computer users or to send
company newsletters to a distribution list.
IGMP
Snooping
Snoop the IGMP packets on each port and associate the
port with a layer 2 multicast group.
mask
See network mask.
Multicast
To send data to a group of network devices.
Mbps
Abbreviation for Megabits per second, or one million bits
per second. Network data rates are often expressed in
Mbps.
